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Keerthi, C. M.
- Reaction of CMS, Restorer Lines and Hybrids of Sunflower to Alternaria helianthi
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Authors
Affiliations
1 Department of Genetics and Plant Breeding, University of Agricultural Sciences, G.K.V.K., Bengaluru (Karnataka), IN
2 Department of Genetics and Plant Breeding, University of Agricultural Sciences, Dharwad (Karnataka), IN
1 Department of Genetics and Plant Breeding, University of Agricultural Sciences, G.K.V.K., Bengaluru (Karnataka), IN
2 Department of Genetics and Plant Breeding, University of Agricultural Sciences, Dharwad (Karnataka), IN
Source
Asian Journal of Bio Science, Vol 7, No 2 (2012), Pagination: 130-137Abstract
Tolerant reaction for Alternaria leaf blight has been observed in hybrid CMS 17A × RHA-857 and KBSH-44. Among lines, FMS R265A and restorer lines 6-D-1 and RHA-274 shown high degree of susceptibility with grades of 9 and remaining parents shown susceptible reaction with grade of 7 or 8. It indicates that it is possible to synthesize hybrids with reasonable degree of tolerance by involving susceptible parents also. The extent of resistance however, can be enhanced when allelic differences exist between parents and by subjecting above crosses to recurrent selection. The high yielding hybrids CMS 17A × 6-D-1P#2 and CMS 234A × 6-D-1P#2 exhibited some degree of tolerant reaction. Based on disease severity, CMS 17A × RHA-857, CMS 234A × 6-D-1P#2 and CMS 302A × VI-34 were termed as slow blighters, whereas hybrids, CMS 234A × VI-34, CMS 234A × 6-D-1, CMS 234A × VI-66, CMS 302A × R-16 and CMS 302A × V-20 could be termed as intermediate blighters.Keywords
Sunflower, PDI, AUDPC, Slow Blighters.
- Photo-thermal Effects on Time to Flowering in Dolichos Bean (Lablab purpureus (L). Sweet) Var. Lignosus
Abstract Views :224 |
PDF Views:85
Authors
Affiliations
1 Department of Genetics and Plant Breeding, University of Agricultural Sciences, GKVK, Bengaluru 560 065, IN
2 All India Coordinated Research Project on Pigeonpea, Zonal Agricultural Research Station, UAS, Bengaluru 560 065, IN
1 Department of Genetics and Plant Breeding, University of Agricultural Sciences, GKVK, Bengaluru 560 065, IN
2 All India Coordinated Research Project on Pigeonpea, Zonal Agricultural Research Station, UAS, Bengaluru 560 065, IN
Source
Current Science, Vol 115, No 7 (2018), Pagination: 1320-1327Abstract
Prediction of time to flowering of crop plants (especially photoperiod sensitive (PS) ones) help make appropriate crop management decisions such as choosing optimum sowing and harvesting dates which in turn determine plant size and thus affect dry matter production and crop yield. Modelling time to flowering of dolichos bean, a highly PS short-day food legume crop species, indicated greater role of temperature than photoperiod in regulating time to flowering of PS genotypes. The PS and photoperiod insensitive (PIS) genotypes of dolichos bean differed for base (Tb) and optimum temperature requirement for time to flowering. However, they were comparable for critical minimum, maximum and optimum photoperiod requirement for time to flowering. Dolichos bean requires critical minimum, maximum and optimum photoperiods of 11.11, 12.28 and 12.21 h respectively, and critical minimum growing degree days of 372.05°C day-1 and optimum temperature of 23.13°C for time to flowering. Using average daily air temperature, and working backwards in time, it is possible to predict the combination of dolichos bean cultivar and sowing date that will produce ready for harvest crop on a predetermined day when fresh pod quality is optimal.Keywords
Base Temperature, Critical Photoperiod, Dolichos Bean, Regression Models.Full Text
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