Genetic variability studies for yield and yield components in sunflower (Helianthus annuus L.)

Quantitative Analysis of Oil Yield and Its Components in Newly Developed Hybrids of Sunflower (Helianthus annuus L.)

“…Plant height exhibited highly significant positive correlation with head diameter (0.5555, 0.6419), test weight (0.4133, 0.4299), volume weight (0.4482, 0.4657) and seed yield per plant (0.6449, 0.7122) both at phenotypic and genotypic level (Tables 4 and 5). Similar findings were made by Vanisree et al, (1988), Chidambaram and Sundaresan (1990), Uttam et al, (2006), Kaya et al, (2007) and Supriya et al, (2016).…”

Genetic variability and selection criteria of some sunflower genotypes under different pollination methods

“…It is apparent from the pooled data in Table (4) that significant differences were detected among the ten tested sunflower genotypes for all studied traits, indicated that there is valuable genetic variation in these genotypes to warrant selection for improvement sunflower crop. Similar significant genotypic effects for all studied traits were reported by Supriya et al (2016), Neelima et al (2016) and Supriya et al (2017). Irrespective of pollination methods imposed, 'Sakha 53' (21.55 cm) followed by 'L120' (19.83 cm) behaved as the largest head diameter; 'L120' (534.95) followed by 'L880' (503.37) gave more filled seeds per head; 'L120' (80.07 %) followed by 'L92' (76.59 %) had the highest proportion of seed setting; 'L355' (6.76 g) followed by 'L167' (6.73 g) possessed the biggest mass of 100-seed; 'L355' (538.58 mg) followed by ''L880 (535.33 mg) had the biggest mass of kernel; 'L880' (199.71 mg) followed by 'L355' (198.61 mg) expressed the highest mass of hull; the highest proportion of hull was detected in 'L355' (1.07 %) followed by 'L167' (0.82 %); 'L120' (2.98 %, 37.28 g, 1022.95 kg and 42.86 %) followed by 'L92' (2.83 %, 33.83 g, 890.05 kg and 40.21 %) behaved as the largest ratio of Kernel to hull, seed mass per plant, seed yield per fed and seed oil content, respectively.…”

“…This indicated that tested sunflower genotypes significantly differed from pollination method to another for all studied traits, hence it was considered as important interaction to discussion. Similar significant interactive effect of pollination methods with sunflower genotypes were reported by Supriya et al (2016), Neelima et al (2016) and Supriya et al (2017).…”

“…Successful sunflower breeding program depends on magnitude of genetic variability in the breeding material and knowledge of selection criteria would be effective in improving seed yield. In this respect, considerable amount of genetic variability might be affect days to first flowering, days to full flowering, plant height, stem diameter, autogamy percentage, self-compatibility percentage, head diameter, number of filled seeds per head, number of unfilled seeds per head, total number of seeds per head, seed setting percentage, 100-seed mass, kernel mass (mg), hull mass (mg), hull content (%), kernel to hull ratio, seed mass per plant, seed yield per fed and seed oil content as reported by Sameena (2003), Supriya et al (2016), Neelima et al (2016) and Supriya et al (2017). High heritability coupled with high percentage of genetic advance were observed for head diameter, seed mass per plant, 100-seed mass, pollen production per plant, plant height and percentage of hull mass as reported by by Khan and Muhammad (2007), Kalukhe et al (2010), Sudrik et al (2014) and Seyed et al (2014), Sheshaiah and Shankargoud (2015), Supriya et al (2016), Dudhe et al (2017) and Baraiya et al (2018).…”

Genetic variability studies for yield and its component traits in newly developed sunflower (Helianthus annuusL.) hybrids

“…The heritability estimates help in determining the relative amount of heritable portion in variation and thus help a plant breeder in selecting the elite inbreds from a diverse population. Heritability estimates in conjunction with genetic advance are more helpful in predicting the genetic gain under selection than heritability alone (Supriya et al 2016). Therefore, an attempt was made in the present investigation to assess the variability, heritability and genetic advance studies in twenty four hybrids and ten parents for eighteen characters.…”