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Tamil Selvi, N. A.
- Screening of Cucurbitaceous Rootstocks against Root Knot Nematodemeloidogyne Incognitakofoid and White
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Authors
Affiliations
1 Department of Vegetable Crops, Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore T.N., IN
2 Tapioca and Castor Research Station, Yethapur, Salem T.N., IN
3 Directorate Open and Distance Learning, Tamil Nadu Agricultural University, Coimbatore T.N., IN
1 Department of Vegetable Crops, Horticultural College and Research Institute, Tamil Nadu Agricultural University, Coimbatore T.N., IN
2 Tapioca and Castor Research Station, Yethapur, Salem T.N., IN
3 Directorate Open and Distance Learning, Tamil Nadu Agricultural University, Coimbatore T.N., IN
Source
The Asian Journal of Horticulture, Vol 8, No 2 (2013), Pagination: 720-725Abstract
Root knot nematodes are responsible for severe crop loss in cucurbits to the tune of 547.5 million. Pot culture experiments were conducted under glasshouse conditions to study the effect of ischolar_main knot nematode, Meloidogyne incognita Kofoid and White in twelve wild and cultivated cucurbitaceous species and to identify resistant ischolar_main stocks for grafting in bitter gourd. Second stage juveniles of M. incognita were inoculated at 2J2 per cc soil into the rhizosphere of 21 days old seedlings and changes in the growth rate viz., shoot length, shoot fresh and dry weight, ischolar_main length, ischolar_main fresh and dry weight were recorded after sixty days after inoculation. Number of galls per 10 gram of ischolar_main, egg mass and females per gram of ischolar_main, soil nematode population per 200 cc soil, final nematode population and ischolar_main gall indices were also determined at the end of the experiment. Soil and ischolar_main population of nematodes were assessed by standard methods and growth parameters were worked out. Among ten ischolar_mainstocks screened against M. incognita, three genotypes viz., Kumati kai (Citrulus colocynthus), african horned cucumber (Cucumis metuliferus) and pumpkin (Cucurbita moschata) showed resistant reaction followed by two ischolar_mainstocks viz., Sponge gourd (Luffa cylindrica,/i>) and mithi pakal (Momordica charantia var. muricata) which were moderately resistant. These ischolar_mainstocks were further used for grafting with bitter gourd scion.Keywords
Root Knot Nematode, meloidogyne Incognita, Resistance, Bitter Gourd Grafting- Studies on Heterosis in Pumpkin (Cucurbita moschata Duch. Ex Poir)
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PDF Views:115
Authors
Affiliations
1 Department of Vegetable Crops, Horticulture College and Research Institute, Tamil Nadu Agricultural University, Coimbatore - 641 003, IN
2 Department of Spices and Plantation Crops, Horticulture College and Research Institute, Periyakulam, IN
3 Tapioca and Castor Research Station, Yethapur, Salem - 636 119, IN
1 Department of Vegetable Crops, Horticulture College and Research Institute, Tamil Nadu Agricultural University, Coimbatore - 641 003, IN
2 Department of Spices and Plantation Crops, Horticulture College and Research Institute, Periyakulam, IN
3 Tapioca and Castor Research Station, Yethapur, Salem - 636 119, IN
Source
Journal of Horticultural Sciences, Vol 9, No 2 (2014), Pagination: 131-140Abstract
An investigation was carried out to assess the extent of heterosis for fruit, yield and quality parameters in pumpkin (Cucurbita moschata Duch. ex Poir). The trial was conducted at Department of Vegetable Crops, Horticulture College and Research Institute, Tamil Nadu Agricultural University, Coimbatore, during 2009-2010. Hybrids developed by line x tester mating design, with twelve lines and three testers along with commercial check MPH 1 in pumpkin, were evaluated for fruit weight, fruit number per vine, fruit equatorial diameter, fruit polar diameter, flesh thickness, seed number per fruit, seed weight per fruit, fruit yield per vine and quality parameters, viz., total carbohydrate content, total carotenoid and crude fibre content in the fruit. Among the hybrids, Kasi Harit x Avinashi Local showed positive and significant heterosis for fruit number per vine, flesh thickness, seed weight per fruit, total carotenoid content and fruit yield per vine. Vadhala Gundu Local x CO 2 was the next best, as, the hybrid possessed desirable traits, viz., high fruit number per vine, flesh thickness, total carotenoid content and fruit yield per vine.Keywords
Heterosis, Pumpkin, Relative Heterosis, Heterobeltiosis, Standard Heterosis.- Evaluation of F1 Hybrids of Pumpkin (Cucurbita moschata Duch. Ex Poir) for Yield and Quality
Abstract Views :235 |
PDF Views:140
Authors
Affiliations
1 Department of Vegetable Crops, Tamil Nadu Agricultural University, Coimbatore - 641 003, IN
2 Tapioca and Castor Research Station, Yethapur, Salem - 636 119, IN
1 Department of Vegetable Crops, Tamil Nadu Agricultural University, Coimbatore - 641 003, IN
2 Tapioca and Castor Research Station, Yethapur, Salem - 636 119, IN