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Articles by R.M. Reddy
Total Records ( 2 ) for R.M. Reddy
  R.M. Reddy , M.K. Sinha , K.P.K. Kumar , N.S. Gahlot , A.K. Srivastava , P.K. Kar and B.C. Prasad
  The aim of the present study is to explore hybridization influence to achieve the potential of silk yield and quality in commercial tasarculture, as against the current status of applying only a few wild and semi-domesticated ecoraces of Antheraea mylitta D to produce raw silk during commercial crop rearing season (September-December). The four F1 hybrid combinations generated using Daba, Jata and Raily tasar ecoraces of seed crop rearing season (July-August) were evaluated during commercial crop season of 2007 and 2008 for the influence of hybridization as positive heterosis in the traits of economically important silk productivity and filament denier. The F1 hybrid, Daba x Jata has recorded positive heterosis in single shell weight (+25.6%), total silk yield (+79.0%) and silk filament length (+68.1%), but for silk filament of high denier (11.98 d) followed by its reciprocal hybrid, JataxDaba in shell weight (+18.8%), silk yield (+68.1%), filament length (+63.8%) and filament of highest denier (12.32 d). Though, the RailyxDaba hybrid could show highest heterosis in shell weight (2.47 g) with filament of least denier (10.86 d), the improvement in filament length was marginal (+44.7%) and heterosis in silk yield was negative (-47.0%), while the performance of DabaxRaily hybrid was least among the hybrids. The study infers hybridization influence on silk related traits at F1 level as positive heterosis and the application feasibility of DabaxJata and JataxDaba hybrids during commercial crop rearing season for higher silk productivity with silk filament denier at least better than one of the parents of F1 hybrid combination.
  R. Kumar , R.M. Reddy , P.S. Sinha , J. Tirkey , M.K. Singh and B.C. Prasad
  The continuous exploitation of tropical tasar food-plant, Terminalia tomentosa (W and A) rose on wastelands under the rain-fed conditions by rearing its economic insect pest; Antheraea mylitta (D) needs soil management for sustainable yields. To asses the feasibility, legumes like Sun hemp (Crotalaria juncea), Daincha (Sesbania aculeata), Green gram (Vigna radiatus) and Black gram (Vigna mungo) were raised during monsoon (June) season in the inter space of T. tomentosa economic plantation for biomulching. The Sun hemp has yielded highest biomass of 39.0 q ha -1, followed by Daincha, Green gram and Black gram with 26.6, 25.3 and 17.7 q ha -1, respectively after 45 to 50 days of sowing, has been mulched for soil fortification. The water holding capacity, electrical conductivity and organic carbon have been improved with reduced pore space and bulk density of the soil and enhanced leaf yield of tasar food-plant after legume biomulching. The superior Effective Rate of Rearing (ERR), higher cocoon and shell weights, better silk ratio and longer silk filament length of tasar silkworm in biomulch treatments have contributed to increase silk yield. Among the biomulches, Sun hemp has shown improved water holding capacity (56.9%) and moisture (68.5 and 37.9%) at 30 and 45 cm depth with electrical conductivity (0.30 mhos cm -1), bulk density (1.12 g cm -3), pore space (50.4%), organic carbon (0.61%) of soil, leaf yield (24.8 MT ha -1) of food plant and ERR (80.1%), cocoon weight (12.25 g), shell weight (1.90 g), silk ratio (14.03%) and silk filament length (724 m) specify its suitability in making tropical tasarculture sustainable under rain-fed conditions.
 
 
 
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