HETEROTIC EXPRESSIONS EVALUATION FOR GRAIN YIELD AND QUALITY TRAITS IN CMS BASED RICE HYBRIDS
Journal Title: International Journal of Genetics - Year 2017, Vol 9, Issue 3
Abstract
An experiment was conducted to evaluate the heterotic expressions of twenty one crosses for twenty grain yield and quality traits. These crosses were generated in Line x Tester fashion by using three CMS lines and seven testers. A standard check Indira Sona, first hybrid rice of Chhattisgarh was used to estimate the standard heterosis. In present investigation we found that hybrid IR-58025A x Karmamahsuri showed significant negative heterosis for days to 50% flowering and plant height both so that this will be effective for developing short duration, semidwarf rice hybrid. Two hybrids, IR-79156A x RIL-62 and IR-79156A x Bagdidhan were showed significant positive relative heterosis, heterobeltiosis and standard heterosis over Indira Sona for grain yield per plant. Hybrid, IR-79156A x Bagdidhan showed significant positive standard heterosis for grain yield per plant and biological yield per plant which may be utilized in developing high yield potential hybrids. Crosses, CRMS-32A x Bagdidhan, IR-79156A x RIL-62 and IR-58025A x Karmamahsuri showed significant positive relative heterosis, heterobeltiosis and standard heterosis for head rice recovery. In view of both, grain yield and grain quality together, hybrid IR-79156A x RIL-62 exhibited significant relative heterosis, heterobeltiosis and standard heterosis for grain yield as well as for head rice recovery and other quality characteristics in the desirable range. So these promising cross combinations could be further used in rice breeding programme for developing high yielding rice hybrids with good grain quality.
Authors and Affiliations
PARMESHWAR KUMAR SAHU, DEEPAK SHARMA, SATYAPAL SINGH, ISHU KUMAR KHUTE, FAKIR CHAND SAO
Keywords
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