The effects of dwarfing genes on root development in pearl-millet (Pennisetum typhoides (Burm.) Stapf. & Hubbard), inbreds and hybrids

Tongoona, P. and Muchena, S.C. and Hendrikz, J.K. (1984) The effects of dwarfing genes on root development in pearl-millet (Pennisetum typhoides (Burm.) Stapf. & Hubbard), inbreds and hybrids. Zimbabwe Journal of Agricultural Research, 22 (1). pp. 67-83.

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Abstract

Analysis of data from a greenhouse experiment involving 6 tall and 5 dwarf inbreds and 4 tall and 4 dwarf hybrids of P. typhoides [P. americanum] allowed the entries to be divided into groups having high, medium and low mean root : shoot ratios over 4 harvests. There was no clear relationship between plant height and root : shoot ratio. However, (1) the overall mean root : shoot ratio of the dwarf hybrids was greater than that of the tall hybrids, and (2) in 2 out of 3 comparisons involving near-isogenic pairs of inbreds differing only in height, the dwarf line had the higher root : shoot ratio at 2 or more harvests. It is concluded that a well-developed root system may be produced as a pleiotropic effect of the presence of dwarfing genes in certain genetic backgrounds

Item Type: Article
Author Affiliation: Dep. Crop Sci., Fac. Agric., Univ. Zimbabwe, PO Box MP 167, Mount Pleasant, Harare, Zimbabwe
Subjects: Crop Improvement
Divisions: Millet
Depositing User: Mr B Krishnamurthy
Date Deposited: 27 Jun 2012 10:30
Last Modified: 27 Jun 2012 10:30
URI: http://eprints.icrisat.ac.in/id/eprint/6174

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