Genetic variability and heritability studies in sunflower inbred lines
Genetic variability and heritability studies in sunflower inbred lines
165 / 1
Authors
-
S J GAHUKAR
Oilseeds Research Centre, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola-444104
-
SANGITA U FATAK
Oilseeds Research Centre, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola-444104
Keywords:
Genetic, Heritability and Inbred lines, VariabilityAbstract
Sunflower (Helianthus annuus L.) is one of the important oilseed crops after Groundnut, RapeseedMustard and Soybean. Sunflower is an important crop for production of healthy edible oil for cardiac problems due to which sunflower oil has great demand in commence. Breeding programme aim at development of cultivars with high yield and yield components. A wide range of variation has been reported for seed yield, seed number and other important components of yield. The experiment was conducted at Oilseeds Research Centre, Dr. PDKV, Akola during Kharif 2020-2021, to study the Genetic Variability studies in Sunflower Inbred Lines. The experiment consisted of 24 sunflower inbred lines were evaluated with three checks (DRSF 108, DRSF 113 and Phule Bhaskar) respectively and was laid out in Randomized Block Design. In this study illustrated that, the existence of wide ranges of variations for most of the characters among the sunflower inbred lines, Diversity among morphological traits can influence on heterosis and be reliable marker for prediction hybrid potential. The genus sunflower has a very high variability, in wild ecotypes as well in breeding genotypes. Sunflower genotypes differ in plant architecture, types of branching, flower colour and morphology, number and size of heads, seed size and color and many other traits. Analysis of variation indicated that the mean squares of the genotypes were highly significant for all the characters taken under study. The range of variation, as well as genotypic and phenotypic coefficient of variations were high for seed yield per plant, plant height and test weight indicating the scope of improvement through simple selection procedure for obtaining high yield.Broad-sense heritability estimate was maximum for plant height (98.5), while that for seed yield g per plant (97.4) and head diameter (95.6). Hence, higher heritability estimates for these traits indicated that environmental factors did not greatly affect phenotypic variation of these characters.
Downloads
References
Browning SJ, Riordan TP, Johnson RK, Johnson-Cicalese J (1994). Heritability estimates of turf-type characteristics in buffalo grass. Hort Science 29:204–205. DOI: https://doi.org/10.21273/HORTSCI.29.3.204
Burton GW (1952).Quantitative inheritance in grasses. In: Proceedings of the 6th international grasslands congress, vol 1, pp 227–283.
Fourth Advance estimates of Maharashtra State for the year 2021-2022.
Hanson GH, Robinson HF, Comstock RE (1956). Biometrical studies of yield in segregating populations of Korean Lespedeza. Agron J 48:267– 282. DOI: https://doi.org/10.2134/agronj1956.00021962004800060008x
Milatovic D, Nikolic D, Durovic D (2010) Variability, heritability and correlation of some factors affecting productivity in peach. HorticSci (Prague) 27(3):79–87. DOI: https://doi.org/10.17221/63/2009-HORTSCI
Oilseeds Scenario, IIOR, Hyderabad. 2019.
Patil BR, Rudraradhya M, Vijayakumar CHM, BasappaH,Virupakshappa K (1996) .Genetic variability in sunflower. J Oilseeds Res 13:157–161.
Sujatha HL, Chikkadevaiah, Nandini R (2002).Genetic variability study in sunflower inbreds.Helia 25(37):93– 100. DOI: https://doi.org/10.2298/HEL0237093S
Virupakshappa, K. and Sindagi, S.S., 1988. Characterization, evaluation and utilization of sunflower germplasm accessions, a catalogue; Project co-ordinating unit (sunflower), Univ. Agric. Sci., Bangalore, p. 33.
