PJB-2017-120
CLIMATIC VARIATION EFFECTS ON CANOLA (BRASSICA NAPUS) GENOTYPES
AHMAD SHER, FAYYAZ-UL-HASSAN, HAKOOMAT ALI, MUHAMMAD IJAZ, ABDUL SATTAR, T.A. YASIR, SAMI UL-ALLAH AND ABDUL QAYYUM
Abstract
Canola (Brassica napus) is an important quality edible oil crop. An increase in the production of canola can significantly reduce the import of edible oil. With climate change, production of canola is expected to suffer due to water availability issues. Keeping this fact in mind, this study was planned to evaluate the performance of various canola genotypes under diverse agro-ecological regions of Pakistan having different rainfall. The experiment was planned in a randomized complete block design with three replications. Ten canola genotypes viz. Bulbul-98, Zafar-2000, Abaseen, Rainbow, Shiralee, Con-I, Dunkeld, 19-H, Westar and Con-II were grown at three experimental sites (Haripur, Rawalpindi, Layyah) for two years. The results indicated that the chlorophyll contents index, seasonal crop growth rate, seed yield, oil yield, protein contents and the water productivity was the highest at Haripur site and the lowest at Layyah site. However, the oil contents were the maximum at Layyah site during the second year. Among the canola genotypes, the genotype ‘Zafar-2000’ had the highest chlorophyll content index, seasonal crop growth rate, net assimilation rate, seed/oil yield and water productivity than other canola genotypes. However, during the second year, the highest chlorophyll content index, seasonal crop growth rate, seed/oil yield and water productivity were noted in genotype ‘19-H’. This study indicated that the high rainfall areas (e.g. Haripur, Rawalpindi) must be exploited to grow the canola crop to lessen the import of oil from foreign markets. In low rainfall areas (e.g. Layyah), the canal and tube well irrigation facilities are available and the water shortage can be accomplished through irrigation with minimum reliance on rainfall.
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