Peiman Zandi
Chinese Academy of Agricultural Sciences, Institute of Crop Science, Department Member
- Agronomy, seed Science and Technology, Plant Stress Physiology, Stress physiology, Enthomology, Biology, and 43 moreEcology, Environmental Sustainability, Climate Change, Biotechnology, Conservation Biology, Orchids, Threatened Plants, Tropical Ecology, medicinal & Aromatic plants, Field botany, Drought Stress, Seeds, Etnobotánica, Endemic Plants, Botanica, Drought, Floristics, Botanica sistematica, Systematics (Taxonomy), Restoration Ecology, Arctic, Human-wildlife conflicts, Salt Stress, Botany, Ferns and Fern Allies, Phylogenetic studies, Plant Biology, Chemical Ecology, Community Ecology, Ethnobotany, Crude Oil, Avian Ecology, Science Communication, Survival Analysis, Orchidaceae, Indigenous Knowledge, Phylogenetics, Birds (Ecology), Plant Taxonomy (Taxonomy), Quantitative Genetics, Biogeography, Plant Ecology, and Plant Molecular Biologyedit
Pot marigold (Calendula officinalis L.) is an annual medicinal plant which has been cultivated for herbal raw material (flower heads); its material has been benefiting the pharmaceutical and cosmetic industry since the ancient times. A... more
Pot marigold (Calendula officinalis L.) is an annual medicinal plant which has been cultivated for herbal raw material (flower heads); its material has been benefiting the pharmaceutical and cosmetic industry since the ancient times. A field study was carried out in the years 2006-2007 in the Experimental Farm of the Islamic Azad University of Takestan in Iran. The study was conducted on a fine, mixed, thermic, and Typic Haplocambids soil with the granulometric composition of sandy-loam. The aim of the experiment was to determine the effect of different nitrogen rates (N 0 = 0, N 1 = 30, N 2 = 60, N 3 = 90 kg ha -1) and irrigation regimes (I 1 – irrigation after 40 mm, I 2 – irrigation after 80 mm, and I 3 – irrigation after 120 mm evaporation from class A pan) on some agronomic features of flower heads as well as on yield and quality of marigold raw material. Water deficit stress caused reduction in petal yield, extract yield, petal/flower weight ratio, and flower quality while it ...
Research Interests:
Cytoplasmic male sterility and fertility restoration system is the most effective genetic tool to develop hybrid rice technology. To tag the restore genes,a F2 population from a cross between IR42686R and IR58025A was raised in the... more
Cytoplasmic male sterility and fertility restoration system is the most effective genetic tool to develop hybrid rice technology. To tag the restore genes,a F2 population from a cross between IR42686R and IR58025A was raised in the field.Four RF genes were detected on chromosomes 1,7,10,12 with the help of micro satellite simple sequence repeats (SSR) markers. Out of 183 pairs of micro satellite markers, 32 markers showed polymorphism between IR42686R and IR58025A . A new RF locus designated as RF7 on chromosome 12 was found to be linked to RM7003 at a genetic distance of 13.3 cM (LOD 6.12). We report here first, a new molecular marker (RM6344) linked to RF4 locus or, chromosome 7 that was previously mapped by trisomic analysis. RM443 and RM315 were flanking the RF3 gene at a genetic distance of 4.4 (LOD 10.29) and 20.7 cM (LOD 3.98) on chromosome 1 respectively. The RF6 was also flanked on both side with SSR markers RM258 and RM591 at a genetic distance of 4.4 (LOD 10.29) and 23.3 ...
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The effect of four irrigation regimes (I1-Irrigation after 70 mm, I2-Irrigation after 100 mm, I3-Irrigation after 130 mm and I4-Irrigation after 160 mm evaporation from class A pan) and two dates of sowing (August 30 and January 27 ) were... more
The effect of four irrigation regimes (I1-Irrigation after 70 mm, I2-Irrigation after 100 mm, I3-Irrigation after 130 mm and I4-Irrigation after 160 mm evaporation from class A pan) and two dates of sowing (August 30 and January 27 ) were studied during growing season of 2009-2010 at I.A. University of Takestan, Iran. Among the irrigation treatments, irrigation after 70 mm evaporation from class A pan, gave significantly highest plant height, seed/siliqua, siliqua/plant, thousand seed weight and seed yield. The highest seed yield of 3034 kg/ha was obtained from August 30th sowing and decreased gradually thereafter. Findings suggest that, further research should be done on planting date of Indian mustard under different environmental conditions. [Somayeh Rafiei, Amir Hossein Shirani Rad, Peiman Zandi. Effect of Sowing dates and Irrigation regimes on Agronomic traits of Indian mustard in semi-arid area of Takestan. Journal of American Science 2011; 7(10):721-728]. (ISSN: 1545-1003). h...
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The Cactaceae is a family belonging to the order Caryophyllales. Cacti typically are found in dry and arid desert or semi-desert regions with high average daytime temperatures and cold nights, and high evaporation rates. Cacti range from... more
The Cactaceae is a family belonging to the order Caryophyllales. Cacti typically are found in dry and arid desert or semi-desert regions with high average daytime temperatures and cold nights, and high evaporation rates. Cacti range from Canada to Argentina, predominantly occurring in the warm and arid reaches of the continents of both North and South America across a wide range of different habitats like deserts, sandy coastal stretches, scrublands, dry deciduous forests, high alpine steppes and tropical rain forests (Barthlott and Hunt, 1993; Gibson and Nobel, 1986; Nyffeler, 2001). The main diversity centers are Mexico and south-west USA, central Andes, Brazil, Paraguay, Uruguay and Argentina with Mexico being the richest and most endemic region (Boyle and Anderson, 2002; Ortega-Baes and Godínez-Alvarez, 2006). The family is classified into three subfamilies: Pereskioideae, Opuntioideae, and Cactoideae (Schumann, 1899; Barthlott and Hunt, 1993).
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In order to determine the changing trends of some physiological characteristics, biological yield, and flag leaf area in wheat ploidy levels, while also comparing them with Triticale and Tritipyrum amphyploids, 23 genotypes were... more
In order to determine the changing trends of some physiological characteristics, biological yield, and flag leaf area in
wheat ploidy levels, while also comparing them with Triticale and Tritipyrum amphyploids, 23 genotypes were
evaluated in a field-grown condition. Stomatal conductance (g s ), net photosynthesis rate (Pn), transpiration rate (Tr),
substomatal CO 2 concentration (C i ), and water use efficiency (WUE) were measured through three developmental stages
including tillering (Til), early grain filling (EGF) and late grain filling (LGF). Different traits in Triticale and Tritipyrum
genotypes showed a significant difference in comparison with wheat ploidy genotypes. Besides, a significance difference
was observed between the ploidy levels. At EGF stage, there was a considerable disparity among Triticum and Triticale
amphiploids for C i , Tr, and WUE. Triticum and Tritipyrum genotypes statistically demonstrated dissimilar, but
meaningful trends in all of the assessed physiological traits except for Pn. Moreover, Triticale and Tritipyrum
amphiploids represented to have various results in terms of g s . Results showed that the amounts of g s , Pn, and WUE have
increased noticeably until EGF stage and they have declined by 50% at LGF stage. The highest mean values
corresponding to C i (Til, EGF, LGF), Pn (LGF), Tr (EGF), and g s (EGF, LGF) traits were belonged to Tritipyrum species
which likely relates the breeding capability of such newfound amphiploid genotypes. Correlation coefficients analysis
revealed that Pn had positive association with g s and Tr in the Til and LGF stages. Throughout the whole phases of the
study, Tr and WUE have increased with increasing g s and Pn. Reductions of g s and Tr in EGF stage have caused WUE to
increase. In 4x and 6x wheat genotypes, the biological yield was positively associated with Pn and Tr. In 4x wheat, the
flag leaf area had a negative correlation with Pn and WUE, while in 6x wheat, along with the flag leaf area increasing,
Pn and Tr have soared and C i has decreased. This research was an attempt to assist wheat breeders in selecting well-
suited breeding lines and physiological parameters, leading to producing high-yielding genotypes in Triticum spp.
wheat ploidy levels, while also comparing them with Triticale and Tritipyrum amphyploids, 23 genotypes were
evaluated in a field-grown condition. Stomatal conductance (g s ), net photosynthesis rate (Pn), transpiration rate (Tr),
substomatal CO 2 concentration (C i ), and water use efficiency (WUE) were measured through three developmental stages
including tillering (Til), early grain filling (EGF) and late grain filling (LGF). Different traits in Triticale and Tritipyrum
genotypes showed a significant difference in comparison with wheat ploidy genotypes. Besides, a significance difference
was observed between the ploidy levels. At EGF stage, there was a considerable disparity among Triticum and Triticale
amphiploids for C i , Tr, and WUE. Triticum and Tritipyrum genotypes statistically demonstrated dissimilar, but
meaningful trends in all of the assessed physiological traits except for Pn. Moreover, Triticale and Tritipyrum
amphiploids represented to have various results in terms of g s . Results showed that the amounts of g s , Pn, and WUE have
increased noticeably until EGF stage and they have declined by 50% at LGF stage. The highest mean values
corresponding to C i (Til, EGF, LGF), Pn (LGF), Tr (EGF), and g s (EGF, LGF) traits were belonged to Tritipyrum species
which likely relates the breeding capability of such newfound amphiploid genotypes. Correlation coefficients analysis
revealed that Pn had positive association with g s and Tr in the Til and LGF stages. Throughout the whole phases of the
study, Tr and WUE have increased with increasing g s and Pn. Reductions of g s and Tr in EGF stage have caused WUE to
increase. In 4x and 6x wheat genotypes, the biological yield was positively associated with Pn and Tr. In 4x wheat, the
flag leaf area had a negative correlation with Pn and WUE, while in 6x wheat, along with the flag leaf area increasing,
Pn and Tr have soared and C i has decreased. This research was an attempt to assist wheat breeders in selecting well-
suited breeding lines and physiological parameters, leading to producing high-yielding genotypes in Triticum spp.
Research Interests:
The growing seasons usually depends on the seedling transplanting dates. Proper sowing time is good cultural practice to complete growing phase successfully. This research was conducted on the basis of randomized... more
The growing seasons usually depends on the
seedling transplanting dates. Proper sowing time is
good cultural practice to complete growing phase
successfully. This research was conducted on the
basis of randomized complete block design with split
plot arrangement (three replicates) during the 2012
cropping season at Rice Research Institute of Iran,
Mazandaran. Three seedling transplanting dates (1 st
May, 21 st May and 10 th June) and six rice cultivars
(‘Neda’, ‘Hovaze’, ‘Hashemi’, ‘Domsiah’, ‘Tarom’ and
‘Fajr’) were studied. Among the studied cultivars,
‘Neda’, transplanted on 21 st May, recorded higher
effective tillers, fertile spikelets, bolder grains with
greater 1000-grain weight and grain yield. However,
panicle exertion, 1000-grain weight and fertile
spikelets were equally greater with non-significant
differences in 1 st and 21 st May except for plant height
which declined in the early and mid transplanting.
The suitability of early and mid transplanting was
mainly due to favourable weather temperature
during the growing phase. Correlation coefficient
analysis showed that a unit increase in effective
tillers, total number of spikelets and 1000-grain
weight correspondingly increased grain yield by
236.6, 39.4 and 72.1 kg/ha, respectively. Irrespective
of cultivars type, the late transplanting of 10 th June
increased plant height while it decreased important
yield components. Observed trends associated with
growth and yield features were found to be similar
in all the studied cultivars. The study concludes that
rice crop may be sown on early and mid transplanting dates (1 st or 21 st May) for achieving better growth and
grain yield.
seedling transplanting dates. Proper sowing time is
good cultural practice to complete growing phase
successfully. This research was conducted on the
basis of randomized complete block design with split
plot arrangement (three replicates) during the 2012
cropping season at Rice Research Institute of Iran,
Mazandaran. Three seedling transplanting dates (1 st
May, 21 st May and 10 th June) and six rice cultivars
(‘Neda’, ‘Hovaze’, ‘Hashemi’, ‘Domsiah’, ‘Tarom’ and
‘Fajr’) were studied. Among the studied cultivars,
‘Neda’, transplanted on 21 st May, recorded higher
effective tillers, fertile spikelets, bolder grains with
greater 1000-grain weight and grain yield. However,
panicle exertion, 1000-grain weight and fertile
spikelets were equally greater with non-significant
differences in 1 st and 21 st May except for plant height
which declined in the early and mid transplanting.
The suitability of early and mid transplanting was
mainly due to favourable weather temperature
during the growing phase. Correlation coefficient
analysis showed that a unit increase in effective
tillers, total number of spikelets and 1000-grain
weight correspondingly increased grain yield by
236.6, 39.4 and 72.1 kg/ha, respectively. Irrespective
of cultivars type, the late transplanting of 10 th June
increased plant height while it decreased important
yield components. Observed trends associated with
growth and yield features were found to be similar
in all the studied cultivars. The study concludes that
rice crop may be sown on early and mid transplanting dates (1 st or 21 st May) for achieving better growth and
grain yield.
Research Interests:
The global ocean constitutes around 90% habitable space o n t h e p l a n e t ; however, while 12% of global land is protected, less than 1% of the global ocean and seas are provided protection. It is interesting... more
The global ocean constitutes around 90% habitable space
o n t h e p l a n e t ; however, while 12% of global land is
protected, less than 1% of the global ocean and seas are
provided protection. It is interesting to note that around
70% of global species are marine. Marine biodiversity is an important global resource that has been integral part of major economies as well global ecosystems across the planet. However, due to indiscriminate and non-judicious
exploitation of this important global resource (~60% of global marine ecosystems have been seriously impacted) and severe anthropogenic pressure as a result of extensive industrial activities along sensitive coastal regions, expansion of exclusive economic zones, aggressive
promotion of tourism and marine fisheries have been responsible for repaid degradation and depletion of global marine biodiversity.
o n t h e p l a n e t ; however, while 12% of global land is
protected, less than 1% of the global ocean and seas are
provided protection. It is interesting to note that around
70% of global species are marine. Marine biodiversity is an important global resource that has been integral part of major economies as well global ecosystems across the planet. However, due to indiscriminate and non-judicious
exploitation of this important global resource (~60% of global marine ecosystems have been seriously impacted) and severe anthropogenic pressure as a result of extensive industrial activities along sensitive coastal regions, expansion of exclusive economic zones, aggressive
promotion of tourism and marine fisheries have been responsible for repaid degradation and depletion of global marine biodiversity.
Research Interests:
The Rosales includes 9 families and about 6300 species; the monophyly of this order is supported by molecular phylogenetic analyzes and characterized morphologically by a reduction or lack of endosperm and the presence... more
The Rosales includes 9 families and about 6300 species; the monophyly of this order is
supported by molecular phylogenetic analyzes and characterized morphologically by a
reduction or lack of endosperm and the presence (Rosaceae, Rhamnaceae, and some
Ulmaceae) or absence (Cannabaceae, Urticaceae, and Moraceae) of a hypanthium. However, phylogenetic relationships within order are still not well resolved, but the principal families recognized are Rosaceae, Rhamnaceae, Ulmaceae, Cannabaceae,
Urticaceae, and Moraceae.
supported by molecular phylogenetic analyzes and characterized morphologically by a
reduction or lack of endosperm and the presence (Rosaceae, Rhamnaceae, and some
Ulmaceae) or absence (Cannabaceae, Urticaceae, and Moraceae) of a hypanthium. However, phylogenetic relationships within order are still not well resolved, but the principal families recognized are Rosaceae, Rhamnaceae, Ulmaceae, Cannabaceae,
Urticaceae, and Moraceae.
Research Interests:
Research Interests:
Drought is a wide spread limiting problem seriously infl uencing rapeseed (Brassica napus L.) growth, production and quality, mostly in dryland regions. However, identifi cation and development of resistant varieties is prohibited by... more
Drought is a wide spread limiting problem seriously infl uencing rapeseed (Brassica
napus L.) growth, production and quality, mostly in dryland regions. However,
identifi cation and development of resistant varieties is prohibited by destitute of
eff ective selection criteria. Th e aim of this study was to evaluate the prevention
possibility of rapeseed varieties against terminal-season water defi cit stress through
selecting suitable varieties. Th irty-four rapeseed varieties were tested in a split plot
design based on randomized complete block design (RCBD) with four replications
for two years (2005- 2006 and 2006-2007) at Seed and Plant Improvement Institute
of Karaj, Iran. Two irrigation levels consisting of irrigation aft er 80 mm evaporation
from class “A” pan during full growing season as normal irrigation (I) and water
defi cit stress (S) by restricting watering from the fl owering phase until full maturity
were established in main plots, and subplots were devoted to split application of
varieties. Water defi cit stress caused noticeable decrease in plant height, silique
plant-1, seed silique-1, 1000-kernel weight, seed yield, oil percentage, oil yield and
harvest index. Th ere were signifi cant positive correlations between seed yield and
yield-related components. Meanwhile, the highest correlation was recorded for
number of seeds per siliqua (r= 0.64; P<0.01), suggesting that late-season water defi cit
stress could be used in selecting drough tolerant varieties. Among varieties, ‘Sunday’
produced the highest seed yield (4938 kg ha-1) and oil yield (2317 kg ha -1) in normal
irrigation, and ‘ORW20-3002’ had the highest seed yield (2348 kg ha-1) and oil yield
(1000 kg ha -1) in water defi cit stress conditions. Accordingly, ‘ORW20-3002’ and
‘Sunday’ can be reported as varieties with sustainable productivity in stress and non-
stress conditions.
napus L.) growth, production and quality, mostly in dryland regions. However,
identifi cation and development of resistant varieties is prohibited by destitute of
eff ective selection criteria. Th e aim of this study was to evaluate the prevention
possibility of rapeseed varieties against terminal-season water defi cit stress through
selecting suitable varieties. Th irty-four rapeseed varieties were tested in a split plot
design based on randomized complete block design (RCBD) with four replications
for two years (2005- 2006 and 2006-2007) at Seed and Plant Improvement Institute
of Karaj, Iran. Two irrigation levels consisting of irrigation aft er 80 mm evaporation
from class “A” pan during full growing season as normal irrigation (I) and water
defi cit stress (S) by restricting watering from the fl owering phase until full maturity
were established in main plots, and subplots were devoted to split application of
varieties. Water defi cit stress caused noticeable decrease in plant height, silique
plant-1, seed silique-1, 1000-kernel weight, seed yield, oil percentage, oil yield and
harvest index. Th ere were signifi cant positive correlations between seed yield and
yield-related components. Meanwhile, the highest correlation was recorded for
number of seeds per siliqua (r= 0.64; P<0.01), suggesting that late-season water defi cit
stress could be used in selecting drough tolerant varieties. Among varieties, ‘Sunday’
produced the highest seed yield (4938 kg ha-1) and oil yield (2317 kg ha -1) in normal
irrigation, and ‘ORW20-3002’ had the highest seed yield (2348 kg ha-1) and oil yield
(1000 kg ha -1) in water defi cit stress conditions. Accordingly, ‘ORW20-3002’ and
‘Sunday’ can be reported as varieties with sustainable productivity in stress and non-
stress conditions.