Research article    |    Open Access
Helia 2003, Vol. 26(38) 73-80

GENETIC DIVERGENCE FOR SEED PARAMETERS IN SUNFLOWER (Helianthus annuus L.)

S.V. Rama Subrahmanyam, S. Sudheer Kumar & A.R.G. Ranganatha

pp. 73 - 80

Publish Date: June 01, 2003  |   Single/Total View: 1/1   |   Single/Total Download: 1/1


Abstract

An investigation was taken up at the Directorate of Oilseeds Research, Hyderabad, India, to determine the extent of genetic divergence with respect to eleven characters in 85 sunflower genotypes consisting of 80 inbreds and five check cultivars. Univariate and multivariate analysis of variance revealed the presence of significant differences among the genotypes. Mahalanobis’ D2 statistic indicated the presence of substantial genetic diversity. The genotypes were grouped into fifteen clusters. Based on the intercluster distance and cluster mean for various characters, potential lines were identified from clusters III, IV, VI, VIII, XI, XII and XIV for crossing program. Among the investigated characteristics, the number of filled seeds per head, test weight, kernel to hull ratio and seed yield per plant exhibited high contribution towards genetic divergence. The present study indicates that the inclusion of GP-347, GP-1341, 300-B, ARM-244, ARM-248, HAR-5, 853-B, GP-913, GP-507 and GP-831 in future breeding programs could result in the development of superior sunflower cultivars.

Keywords: D2, genetic divergence, inbreds, multivariate analysis, seed parameters, sunflower


How to Cite this Article?

APA 7th edition
Subrahmanyam, S.R., Kumar, S.S., & Ranganatha, A. (2003).

GENETIC DIVERGENCE FOR SEED PARAMETERS IN SUNFLOWER (Helianthus annuus L.)

. Helia, 26(38), 73-80.

Harvard
Subrahmanyam, S., Kumar, S. and Ranganatha, A. (2003).

GENETIC DIVERGENCE FOR SEED PARAMETERS IN SUNFLOWER (Helianthus annuus L.)

. Helia, 26(38), pp. 73-80.

Chicago 16th edition
Subrahmanyam, S.V. Rama, S. Sudheer Kumar and A.R.G. Ranganatha (2003). "

GENETIC DIVERGENCE FOR SEED PARAMETERS IN SUNFLOWER (Helianthus annuus L.)

". Helia 26 (38):73-80.