24 Jul Hybrid seed production technology of rapeseed-mustard
सरसों (रेपसीड) की संकर बीज उत्पादन करने की तकनीक The potential of the conventionally bred open pollinated varieties has been exploited to its maximum level resulting in a platue in the productivity level, which breeder often calls as yield stagnancy. Here we need to exploit the heterosis i.e. hybrid vigour to break the yield platue. Three hybids, namely NRCHB 101, NRCHB 506 and Dhara mustard hybrid-1 were released in 2008. Development of a successful hybrid seed production technology in a crop is essential for the extension of hybrid technology to farmers. Standardization of sowing time and planting ratio is an important aspect for economic hybrid seed production and it is more valid for a species, which is predominantly self- pollinated. A higher frequency of male rows in a planting ratio sown at optimum time gives higher hybrid seed set in Indian mustard. HSP plot with 8:2 row ratio Hybrid seed production block A successful hybrid seed production technology depends mainly on maintenance of its parental lines at highest purity. Maintenance of parental lines/nucleus seed production CMS is sown in seed multiplication plot along with its maintainer (B-line) in 4: 2 ratio just like hybrid seed production plot. In order to have high pollen pressure, planting...