Bitter gourd (Momordica charantia) is economically important vegetable in Southeast Asia. The fru... more Bitter gourd (Momordica charantia) is economically important vegetable in Southeast Asia. The fruit of bitter gourd has higher content in folate and vitamin C, while the vine tips are excellent sources of vitamin A. it also has medicinal value in the treatment of infectious diseases and especially diabetes as hypoglycemic agent. The root knot nematode is one of the important pests of bitter gourd and is
Districts of Chhattisgarh state (India) were surveyed for plant parasitic nematodes associated wi... more Districts of Chhattisgarh state (India) were surveyed for plant parasitic nematodes associated with various vegetable crop plants. Soil and root samples were collected from the rhizosphere of plants and nematodes isolated by Cobb's sieving and decanting method, followed by modified Baermann's funnel technique. Nine species of nematodes spread over six genera, were found associated with tomato, beans, brinjal, cowpea and bottle gourd. Meloidogyne javanica, M. incognita, M. arenaria and Meloidogyne spp. were found to be prevalent in the Durg district. The reniform nematode, Rotylenchulus reniformis was prevalent in Bilaspur district and M. javanica in Jashpur district. R. reniformis and T. indicus are most frequent species (both 53.85%) followed by M. javanica (46.15%), Pratylenchus spp. (30.77%) and Helicotylenchus spp. and Tylenchidae least frequent (both 7.69%). Highest prominence value was observed for M. javanica (198.60) followed by M. incognita (191.18) and Meloidogyne ...
Root knot nematodes (Meloidogyne species) are major pests of vegetable crops causing serious loss... more Root knot nematodes (Meloidogyne species) are major pests of vegetable crops causing serious losses in quantity and quality of crop yield. This study involves an assessment of their suitable hosts on the basis of variations in their population densities and body sizes in different vegetable crop plants under field conditions. A random survey of root knot nematode infestation in vegetable crops was conducted in 9 villages of Abhanpur block, Chhattisgarh state, Central India, from January 2012 to March 2012. Diseased plants were identified on the basis of above ground symptoms and soil and root samples collected by digging. Extraction of nematodes was done by Cobb’s sieving and decantation method and Baerman’s funnel technique. Identification was done microscopically by morphological examination of perineal patterns of female nematodes. Body sizes were measured by using an eyepiece/ocular micrometer. Twenty nine percent of the total farm area surveyed suffered from root knot nematode...
Bitter gourd (Momordica charantia) is an economically important vegetable
crop facing considerabl... more Bitter gourd (Momordica charantia) is an economically important vegetable crop facing considerable yield loss due to infection by root-knot nematode (Meloidogyne incognita). To understand the biochemical changes taking place during the early response to nematode attack in bitter gourd, pot experiments were conducted. Nematodes were isolated and inoculated (500J2/pot) into the rhizosphere of seedlings. A rapid augmentation in the protein concentration in the first week and total sugar level in the fourth week of inoculation in infected roots was observed. The study indicates a higher rate of protein synthesis during the invasion of nematodes for initiation of early primary resistance mechanism by the plants to combat nematode attack. Augmentation in sugar levels in the 4th week coincides with gall formation in the root tissue by the nematode and indicates a greater influx of sugars in the attacked tissue for providing nutrition to the nematodes for their growth and survival
Bitter gourd (Momordica charantia) is economically important vegetable in Southeast Asia. The fru... more Bitter gourd (Momordica charantia) is economically important vegetable in Southeast Asia. The fruit of bitter gourd has higher content in folate and vitamin C, while the vine tips are excellent sources of vitamin A. it also has medicinal value in the treatment of infectious diseases and especially diabetes as hypoglycemic agent. The root knot nematode is one of the important pests of bitter gourd and is
Districts of Chhattisgarh state (India) were surveyed for plant parasitic nematodes associated wi... more Districts of Chhattisgarh state (India) were surveyed for plant parasitic nematodes associated with various vegetable crop plants. Soil and root samples were collected from the rhizosphere of plants and nematodes isolated by Cobb's sieving and decanting method, followed by modified Baermann's funnel technique. Nine species of nematodes spread over six genera, were found associated with tomato, beans, brinjal, cowpea and bottle gourd. Meloidogyne javanica, M. incognita, M. arenaria and Meloidogyne spp. were found to be prevalent in the Durg district. The reniform nematode, Rotylenchulus reniformis was prevalent in Bilaspur district and M. javanica in Jashpur district. R. reniformis and T. indicus are most frequent species (both 53.85%) followed by M. javanica (46.15%), Pratylenchus spp. (30.77%) and Helicotylenchus spp. and Tylenchidae least frequent (both 7.69%). Highest prominence value was observed for M. javanica (198.60) followed by M. incognita (191.18) and Meloidogyne ...
Root knot nematodes (Meloidogyne species) are major pests of vegetable crops causing serious loss... more Root knot nematodes (Meloidogyne species) are major pests of vegetable crops causing serious losses in quantity and quality of crop yield. This study involves an assessment of their suitable hosts on the basis of variations in their population densities and body sizes in different vegetable crop plants under field conditions. A random survey of root knot nematode infestation in vegetable crops was conducted in 9 villages of Abhanpur block, Chhattisgarh state, Central India, from January 2012 to March 2012. Diseased plants were identified on the basis of above ground symptoms and soil and root samples collected by digging. Extraction of nematodes was done by Cobb’s sieving and decantation method and Baerman’s funnel technique. Identification was done microscopically by morphological examination of perineal patterns of female nematodes. Body sizes were measured by using an eyepiece/ocular micrometer. Twenty nine percent of the total farm area surveyed suffered from root knot nematode...
Bitter gourd (Momordica charantia) is an economically important vegetable
crop facing considerabl... more Bitter gourd (Momordica charantia) is an economically important vegetable crop facing considerable yield loss due to infection by root-knot nematode (Meloidogyne incognita). To understand the biochemical changes taking place during the early response to nematode attack in bitter gourd, pot experiments were conducted. Nematodes were isolated and inoculated (500J2/pot) into the rhizosphere of seedlings. A rapid augmentation in the protein concentration in the first week and total sugar level in the fourth week of inoculation in infected roots was observed. The study indicates a higher rate of protein synthesis during the invasion of nematodes for initiation of early primary resistance mechanism by the plants to combat nematode attack. Augmentation in sugar levels in the 4th week coincides with gall formation in the root tissue by the nematode and indicates a greater influx of sugars in the attacked tissue for providing nutrition to the nematodes for their growth and survival
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Papers by Surendra Gautam
crop facing considerable yield loss due to infection by root-knot nematode
(Meloidogyne incognita). To understand the biochemical changes taking
place during the early response to nematode attack in bitter gourd, pot
experiments were conducted. Nematodes were isolated and inoculated
(500J2/pot) into the rhizosphere of seedlings. A rapid augmentation in the
protein concentration in the first week and total sugar level in the fourth
week of inoculation in infected roots was observed. The study indicates a
higher rate of protein synthesis during the invasion of nematodes for initiation
of early primary resistance mechanism by the plants to combat nematode
attack. Augmentation in sugar levels in the 4th week coincides with gall
formation in the root tissue by the nematode and indicates a greater influx of
sugars in the attacked tissue for providing nutrition to the nematodes for
their growth and survival
crop facing considerable yield loss due to infection by root-knot nematode
(Meloidogyne incognita). To understand the biochemical changes taking
place during the early response to nematode attack in bitter gourd, pot
experiments were conducted. Nematodes were isolated and inoculated
(500J2/pot) into the rhizosphere of seedlings. A rapid augmentation in the
protein concentration in the first week and total sugar level in the fourth
week of inoculation in infected roots was observed. The study indicates a
higher rate of protein synthesis during the invasion of nematodes for initiation
of early primary resistance mechanism by the plants to combat nematode
attack. Augmentation in sugar levels in the 4th week coincides with gall
formation in the root tissue by the nematode and indicates a greater influx of
sugars in the attacked tissue for providing nutrition to the nematodes for
their growth and survival