2020
DOI: 10.2298/gensr2001029h
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Genetic diversity of sunflower genotypes under drought stress by principle component analysis

Abstract: Seventy diverse genotypes were evaluated for drought stress for morphological (shoot and root length, fresh and dry shoot weight, fresh and dry root weight) and physiological traits (stomatal conductance, photosynthesis and transpiration rate) to increase the area under arid and semi-arid climatic condition to overcome the deficiency of edible oil. All genotypes varied significantly for all evaluated traits. High variability for photosynthesis rate and lower for transpiration rate but highly … Show more

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Cited by 4 publications
(3 citation statements)
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References 17 publications
(19 reference statements)
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“…Sunflower is known to be drought resistant due to its strong root system. Under dry conditions, the sunflower roots will grow deeper (Angadi and Entz, 2002;Nejad, 2011;Hasan et al, 2020). In our study, soil available water content was only recorded until a depth of 90 cm.…”
Section: Discussionmentioning
confidence: 68%
“…Sunflower is known to be drought resistant due to its strong root system. Under dry conditions, the sunflower roots will grow deeper (Angadi and Entz, 2002;Nejad, 2011;Hasan et al, 2020). In our study, soil available water content was only recorded until a depth of 90 cm.…”
Section: Discussionmentioning
confidence: 68%
“…For the improvement of genetic material under drought stress, it is very important that genetic diversity should be present against drought. Higher genetic diversity was found in sunflower breeding material under drought stress (Jannatdoust et al, 2016;Hasan et al, 2020a). With the use of combined analysis of variance, significant differences were found among genotypes and levels of drought (Farooq et al, 2018;Hasan et al, 2020b).…”
Section: Discussionmentioning
confidence: 99%
“…The eight-drought tolerant and four drought susceptible lines were screened out against drought from seventy diversifying genotypes (46 inbred A lines and 24 restorer lines) at seedling stage in glass house environment (Hasan et al, 2020a) and these results was verified at maturity stage under field conditions in earlier experiments (Hasan et al, 2020b). The fertility status of the drought tolerant lines was cytoplasmic male sterile (CMS) as well as drought susceptible lines was fertility restorer (FR) (Table 1).…”
Section: Selection Against Droughtmentioning
confidence: 90%