CMS and SI based heterosis for yield and related traits in low chill cabbage under mid hills condition of Himachal Pradesh

Abstract

In present investigation, 24 cross combinations evolved in a line × tester mating design (8 lines, 3 testers and 24 F1 hybrids) were evaluated alongwith two standard check hybrids Varun and KGMR-1 during Rabi 2015-2016. A wide range of heterosis was observed among the cross combinations for all the traits studied. For marketable head yield per plant, eight cross combinations each over BP and SC-1 and five over SC-2 revealed significant positive heterosis. The cross combinations viz., SI I-4-6×Glory-7 (77.60% and 51.36%), SI III-I-I×KGAT-1 (74.28% and 48.53%), IIS CMS×Glory-7 (66.65% and 42.03%), IIS CMS×KGAT-1 (53.00% and 42.03%) and SI III-I-I×E-1-1&-2 (39.17% and 8.61%) were the most promising as they exhibited significant positive heterosis over check hybrid Varun and KGMR-1, respectively indicating that these crosses may be exploited for commercial release.