Exploitation of heterosis involving newly developed low chill requiring SI and CMS lines in cabbage

Abstract

Abstract

The present investigation entitled “Exploitation of heterosis involving newly developed low chill requiring SI and CMS lines in cabbage (Brassica oleracea var. capitata L.)” was carried out at Vegetable Research Farm of the Department of Vegetable Science and Floriculture, CSKHPKV Palampur. Six lines viz., SI-2008-09, I-4-6, I-4-4, M-G-7, S-G-7 and 105-III-CMS were crossed with three testers viz., KGAT-II, GAP and Glory-I to produce 18 F1s during Rabi season 2023-2024. These 18 hybrids were evaluated along with parents and one private sector commercial hybrid as standard check (WS-483) in Randomized Block Design with three replications during Rabi season 2024-2025. RBD analysis revealed significant differences among genotypes (hybrids and parents) for head yield and all the traits yield related and traits studied. On the basis of per se performance and standard heterosis the most promising cross combinations for marketable head yield and other related traits were I-4-6 × GAP and I-4-6 × Glory-I. These newly developed hybrids were found quite promising under mid hill conditions of Himachal Pradesh. Though the proposed hybrids were found statistically at par with commercial check from private sector but these has got the advantage as the parents involved in the development of these two hybrids are low chill requiring, hence, the seed production can be easily done in mid hill conditions.