Arid
DOI10.1016/S0378-4290(03)00006-6
Exploitation of heterosis for simultaneous improvement in both grain and stover yields of arid zone pearl millet (Pennisetum glaucum (L.) R. Br.)
Bidinger, FR; Yadav, OP; Sharma, MM; van Oosterom, EJ; Yadav, YP
通讯作者Bidinger, FR
来源期刊FIELD CROPS RESEARCH
ISSN0378-4290
出版年2003
卷号83期号:1页码:13-26
英文摘要

The requirement for simultaneous increases in stover as well as grain yields in pearl millet in and zone environments means that conventional selection for grain yield improvement through increased harvest index (HI) is not applicable to such environments. In addition, there is a need to retain the adaptive traits present in local landrace germplasm, so that new cultivars for the and zone do not trade increased productivity for reduced yield stability and increased risk of crop failure. This research was designed to test the hyothesis that it will be possible to meet these requirements by exploiting heterosis for overall biomass production in topcross hybrids (TCH) made with adapted, landrace-derived pollinators and dual purpose male-sterile seed parents, which partition the extra biomass of their hybrids equally to grain and stover. General combining ability (GCA) estimates for seven landrace-derived populations/varieties, derived from multi-environment tests in and zone environments, indicated that selection history played a large role in determining GCA for both biomass and HI, with prior selection (for grain yield) favoring GCA for HI at the expense of GCA for biomass. A similar analysis of a set of male-sterile seed parents indicated a wide range of GCA for both grain and stover yields, with a similar tradeoff of GCA for one trait against GCA for the other. It was, however, possible to identify several parental lines with a positive GCA for biomass, achieved by a positive GCA for growth rate, and neutral GCA for HI, resulting in positive/neutral GCA for both stover and grain yields. A limited test of the ability of parental GCA to predict heterosis in TCH indicated that heterosis for stover yield was closely related to pollinator GCA for stover yield, and heterosis for grain yield was related to both pollinator and A-line GCA for HI. The same test confirmed the original hypothesis that crosses of parents with positive GCA for biomass/growth rate and neutral GCA for HI could produce TCH with positive heterosis for grain yield without an off-setting negative heterosis for stover yield. The frequency of such parental lines was limited, however. (C) 2003 Elsevier Science B.V. All rights reserved.


英文关键词arid zone general combining ability heterosis Pennisetran glaucum topcross hybrids
类型Article
语种英语
国家India
收录类别SCI-E
WOS记录号WOS:000183970800002
WOS关键词TOPCROSS HYBRIDS ; ENVIRONMENTS ; ADAPTATION ; SELECTION
WOS类目Agronomy
WOS研究方向Agriculture
来源机构ICAR Central Arid Zone Research Institute ; International Crops Research Institute for the Semi-Arid Tropics
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/144590
作者单位(1)Int Crops Res Inst Semi Arid Trop, Patancheru 502034, Andhra Pradesh, India;(2)Cent Arid Zone Res Inst, Jodhpur 342003, Rajasthan, India;(3)CSS Haryana Agr Univ, Bawal 123501, Haryana, India
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GB/T 7714
Bidinger, FR,Yadav, OP,Sharma, MM,et al. Exploitation of heterosis for simultaneous improvement in both grain and stover yields of arid zone pearl millet (Pennisetum glaucum (L.) R. Br.)[J]. ICAR Central Arid Zone Research Institute, International Crops Research Institute for the Semi-Arid Tropics,2003,83(1):13-26.
APA Bidinger, FR,Yadav, OP,Sharma, MM,van Oosterom, EJ,&Yadav, YP.(2003).Exploitation of heterosis for simultaneous improvement in both grain and stover yields of arid zone pearl millet (Pennisetum glaucum (L.) R. Br.).FIELD CROPS RESEARCH,83(1),13-26.
MLA Bidinger, FR,et al."Exploitation of heterosis for simultaneous improvement in both grain and stover yields of arid zone pearl millet (Pennisetum glaucum (L.) R. Br.)".FIELD CROPS RESEARCH 83.1(2003):13-26.
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