Performance of spring wheat lines near-isogenic for the reduced-tillering ‘tin’ trait across a wide range of water-stress environment-types
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- 作者：Carina Moellera ; carina.moeller@utas.edu.au" class="auth_mail" title="E-mail the corresponding author ; Greg Rebetzkeb ; greg.rebetzke@csiro.au" class="auth_mail" title="E-mail the corresponding author
- 关键词：Tiller-inhibition ; Plasticity ; Yield components ; Genotype ; × ; ; environment interaction ; Managed environment facility
- 刊名：Field Crops Research
- 出版年：2017
- 出版时间：January 2017
- 年：2017
- 卷：200
- 期：Complete
- 页码：98-113
- 全文大小：3195 K
文摘
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Effects of the tiller-inhibition gene tin were quantified in 19 pairs of wheat lines near-isogenic for tin, and in up to 28 water-limited environments.
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G (‘Tin’) × E interactions were significant for grain yield, total biomass, spike number, grains/spike, and number of grains/m2.
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Reduced-tillering plasticity was associated with increased plasticity in numbers of grains/spike and, to a lesser extent, grain weight.
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The marginal yield response to increases in grains/m² was greater in tin-containing lines, i.e. greater plasticity in grains/spike and grain weight can compensate for reduced spike numbers
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The hypothesis of a general yield advantage of tin-containing lines in more severe water-stress environment-types was not confirmed.