Effect of Sodium Azide in Yield and Yield Contributing Traits of Confectionary Sunflower (Helianthus annuus L.)

Abstract

Confectionary sunflower genotypes, EC 625693, EC 318761 and SCG 62 were treated with sodium azide at 100 ppm, 200 ppm and 300 ppm, respectively. In M 2 generation, observations were recorded on eight quantitative characters viz., days to 50% flowering, days to maturity, plant height, head diameter, seed filling percentage, hull content, 100 grain weight and seed yield per plant. The treatment 100 ppm had high mean value for yield and yield contributing characters like head diameter, seed filling percentage, 100 grain weight and seed yield per plant. However, the SCG 62 mutant populations showed negative response for most of the characters. The estimates of GCV, PCV, heritability and genetic advance as percent of mean among treatments were maximum in treatments 300 ppm for head diameter, seed filling percentage and seed yield per plant. Whereas 100 ppm for 100 grain weight and 200 ppm for seed yield per plant also exhibited high estimates of GCV, PCV, heritability and genetic advance as percent of mean in all three mutant populations and selection for these characters enhances genetic improvement.

Genetic variability, heritability and genetic advance studies for morphological and quantitative traits in M3 generation of Safflower [Carthamus tinctorius (L.)]

“…This trait also expressed high heritability value of 96.14% and low value (6.99%) of GA as% of mean. These results are in broad agreement with the reports of Phanindra et al, (2018) [15] in Sunflower, Meena et al, (2020) [12] in Linseed and Rathod et al, (2021) [18] in Safflower. The presence of high/moderate/low heritability, as well as low genetic advance as a percent of the mean, suggests that nonadditive gene action governs the inheritance of oil content.…”

“…This trait also expressed high heritability value of 86.83% and moderate value (16.55%) of GA as% of mean. These results are in accordance with the reports of Phanindra et al, (2018) [15] in Sunflower, Pushpavalli and Kumar (2017) in Safflower, Khattab et al, (2018) [9] in Safflower, Minnie et al, (2020) [13] in Safflower, Leelavati and Mogali (2018) [10] in Linseed and Rajanna et al (2020) [17] in Linseed. The PCV for oil content in M 3 progenies was found to be low with the value of 3.53% and it was recorded a low GCV of 3.46%.…”

Genetic variability, heritability and genetic advance estimates for morphological and quantitative traits in M4 generation of Safflower [Carthamus tinctorius (L.)]

“…This trait also expressed high heritability value of 99.58% followed by low GA as% of mean of 8.04%. These results are in broad agreement with the reports of Phanindra et al, (2018) [17] in Sunflower, Meena et al, (2020) [14] in Linseed and Rathod et al, (2021) [7] in Safflower. The presence of high/moderate/low heritability, as well as low genetic advance as a percent of the mean, suggests that non-additive gene action governs the inheritance of oil content.…”

“…This trait also expressed high heritability value of 89.35% followed by moderate GA as % of mean of 16.36%. These results are in accordance with the reports of Phanindra et al, (2018) [17] in Sunflower, Pushpavalli and Kumar (2017) [30] in Safflower, Khattab et al, (2018) [11] in Safflower, Minnie et al, (2020) [15] in Safflower, Leelavati and Mogali (2018) [12] in Linseed and Rajanna et al (2020) [19] in Linseed. The M 4 progenies registered a low PCV of 3.91% and a low GCV of 3.90% for days to first flowering.…”