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Inheritance of Vegetative Growth Index and Related Traits in Pearl Millet

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Relation http://oar.icrisat.org/1532/
http://dx.doi.org/10.2135/cropsci1995.0011183X003500020019x
 
Title Inheritance of Vegetative Growth Index and Related Traits in Pearl Millet
 
Creator Lynch, P L
Rattunde, E W
Frey, K J
 
Subject Millets
 
Description Growth index (GI) is a measure of plant dry weight produced per unit of land area per day (grams per square meter per day). The objective of this study was to elucidate the inheritance pattern of GI for pearl millet [Pennisetum glaucum (L.) R. Br.]. A generation means analysis was conducted to determine the relative importance of additive, dominance, heterotic, and additive × additive epistatic genetic effects for GI. Two elite open-pollinated and three landrace varieties of pearl millet were mated, and the parents, parent selfed, F1s, F1s selfed, and F1s randomated were evaluated in 1990 and 1991 at the International Crops Research Institute for the Semi-Arid Tropics, near Hyderabad, India. Traits measured were GI at 10 d after bloom date (GI1) and at maturity (GI2), bloom date, biomass, harvest index, and plant height. The fully fitted genetic model for the generation means explained from 88 to 95% of the variation among the generations sum of squares for the various traits. Additive effects accounted for the largest proportion of the variation among generation means for all traits except GI2 and biomass, where additive × additive epistatic effects were of greatest importance. Even though inheritance patterns for GI1 and GI2 were dissimilar, a breeding method that emphasizes selection for additive genetic effects should be suitable for improving them.
 
Publisher Crop Science Society America
 
Date 1995
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
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Identifier http://oar.icrisat.org/1532/1/Crop_Science_35%282%29394-396_1995.pdf
Lynch, P L and Rattunde, E W and Frey, K J (1995) Inheritance of Vegetative Growth Index and Related Traits in Pearl Millet. Crop Science, 35 (2). pp. 394-396. ISSN 1435-0653