Inheritance of seed size in sorghum, Sorghum vulgare Pers

Voigt, R.L. and Gardner, C.O. and Webster, O.J. (1966) Inheritance of seed size in sorghum, Sorghum vulgare Pers. Crop Science, 6 (6). pp. 582-586.

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Abstract

A large-seeded variety of sorghum, ‘Big Seed’, and a small-seeded variety, ‘Norghum’, their F1 and F2 cross generations, and the two first backcrosses were investigated to gain a better understanding of how seed size is inherited and to assess the possibility of increasing seed size through selection. A preliminary study indicated that a 300-seed sample from each plant would give adequate precision.Population means and variances provided the basic data from which conclusions were drawn. All populations were approximately normally distributed on the original scale. Transformation to vY-2 caused the largeseeded parent to depart from normality but eliminated the correlation between means and variances. Gene action appeared to be almost entirely additive. Evidence for dominance or epistasis as an important contributor to seed size was lacking. A minimum of 3 or 4 genetic factors or blocks of genes, primarily additive in their effect, appear to control seed size. Heritability for seed size was estimated to be 60% indicating that considerable progress could be made in shifting mean seed size by selecting and recombining large-seeded F2 plants.

Item Type:	Article
Author Affiliation:	Associate Professor of. Plant Breeding, and Associate Plant Breeder Agricultural Experiment Station, University of Arizona
Subjects:	Crop Improvement > Plant Breeding
Divisions:	Sorghum
Depositing User:	Sandhya Gir
Date Deposited:	31 Oct 2010 16:55
Last Modified:	29 Dec 2010 20:56
Official URL:	http://dx.doi.org/10.2135/cropsci1966.0011183X0006...
URI:	http://eprints.icrisat.ac.in/id/eprint/398

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