Seed Production in Broccoli (Brassica oleracea var. italica) under Jammu Sub-tropics

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Date
2021-03
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Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu
Abstract
The present investigation entitled “Seed production in broccoli (Brassica oleracea var. italica) under Jammu Sub-tropics” was conducted during the year 2019-20 with the objectives (i) To standardize suitable date of transplanting for maximum seed yield and (ii) To compare in-situ and ex-situ method of seed production. The experiment was carried out in Randomized Block Design (factorial), with two method of seed production namely in-situ (seed to seed) and ex-situ (head to seed) and three dates of transplanting viz. 30th September, 15th October and 30th October for getting information on suitable method of seed production and dates of transplanting in broccoli under Sub-tropical conditions of Jammu. Six treatment combinations were taken and replicated four times in 24 plots of size 3 x 3 m with spacing of 60 x 45 cm. The variety taken for study was Jammu Broccoli-07. The studies revealed that in-situ method of seed production significantly influenced days to 50% bolting (107.17), days to 50% flowering (130.92), plant height at maturity (85.39 cm), plant spread (51.79 cm), number of primary branches per plant (25.58), days to seed maturity (193.11), number of siliqua per plant (712.32), siliqua length (6.13cm), number of seeds per siliqua (12.71), seed yield per plant (27.59 g), seed yield per hectare (715.33kg), test weight (3.23g) and germination percentage (94.58%). Amongst dates of transplanting, transplanting on 30th September proved significantly superior to all the characters except for days to 50% bolting, days to 50% flowering, and days to seed maturity which was significantly superior in 30th October transplanting because late sown crop was exposed to low temperature immediately irrespective of its vegetative growth and 15th October transplanting proved superior for number of siliqua per plant. In case of interactions, the treatment combination M1D1 (in-situ method and 30th September transplanting) significantly influenced plant height at maturity (95.63), plant spread (63.38 cm), number of primary branches per plant (29.35), siliqua length (6.27 cm), number of seeds per siliqua (14.54), seed yield per plant (31.83g), seed yield per hectare (825.0 kg) and germination percentage (97.95%), whereas M1D2 (in-situ) method and 15th October transplanting) had significant influence on number of siliqua per plant (851.60), whereas the treatment combination M1D3 (in-situ method and 30th October transplanting) had significant influence on days to 50% bolting (103.0), days to 50% flowering (127.50) and days to seed maturity (184.25). The interaction effect revealed non- significant effect on test weight. Thus, it can be concluded that in-situ method of seed production proved to be significantly superior to the ex-situ transplanting method whereas amongst dates of transplanting, 30th September transplanting performed better with respect to most of the characters under study. Among the interaction effects, M1D1 i.e. in-situ method of seed production and 1st date of transplanting (30th September) performed better for seed production under Jammu Sub-tropics
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Preferred for your work. Parveen, Z. 2021. Seed Production in Broccoli (Brassica oleracea var. italica) under Jammu Sub-tropics. M.Sc. thesis, Sher-e-Kashmir University of Agricultural Sciences and Technology of Jammu, India.
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