Efficacy of different quantitative characters in sunflower genotypes (Helianthus annuus L.) under Tandojam climate conditions

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Babar Ali, Shabana Memon, Zahoor Ahmed Soomro, Liaquat Ali Bhutto, Shamim Ara Memon, Amber Memon


Sunflower is an important oilseed crop that is beneficial not for humans as well as animals. Looking toward the importance of this crop, the present research aimed to study correlation and regression analyses in various sunflower genotypes for yield and its related traits. This study was conducted at Oil Seed Section. Agriculture Research Institute (ARI), Tando Jam during 2020. Ten genotypes viz. Corolla, Melabour, Vulgar, Sputnik, Samsun-20, HO-1, Parson, TJ-1, Mehran-2, Turkish were used to assess the correlation and regression analyses in sunflower (Helianthus annuus L.). The results showed that all the genotypes were largely significant at p≤0.01 position of probability for the no: of seed heads-1, seed yield plant-1, and harvest index & significant at p≤0.05 position of probability for the plant height, seed index, & the biological yield plant-1. Whereas non-significant result showed for germination %, 75% flowering days, 90% maturity days, & head diameter. The mean performance revealed that Mehran-2 depicted a larger head diameter coupled with stronger seed yield and biological yield plant-1, whereas variety vulgar observed a taller plant with a greater seed index. Whereas significant and positive correlation had been observed for biological yield plant-1, harvest index, head diameter, number of seed heads-1, seed index & seed yield plant-1. This research work is valuable for providing high yielding and early maturity genotypes. Though this crop is valuable for its oil purpose and better genotypes grown under various environments can be used for production of sunflower.

Keywords: Correlation; Head diameter; Quantitative traits; Regression analysis; Seed yield plant-1


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