| Carbon Isotope Discrimination is not Correlated with Transpiration Efficiency in Three Cool-Season Grain Legumes （Pulses） |
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| 作者姓名： | Neil C. Turner Jairo A. Palta Renuka Shrestha Christiane Ludwig Kadambot H. M. Siddique David W. Turner |
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| 作者单位： | [1]Centre for Legumes in Mediterranean Agriculture M080 The University of Western Australia 35 Stirling Highway Crawley WA 6009, Australia [2]CSIRO Plant Industry Private Mail Bag No. 5 Wembley, WA 6913 Australia [3]School of Plant Biology M084 Institute of Agriculture The University of Westem Austrafia 35 Stirling Highway Crawley WA 6009, Australia） |
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| 基金项目： | Supported by CSIR0 and the Centre for Legumes in Mediterranean Agricul- ture （CLIMA） at The University of Western Australia. |
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| 摘 要： | The carbon isotope discrimination （δ^13C） of leaves has been shown to be correlated with the transpiration efficiency of leaves in a wide range of species. This has led to δ^13C being used in breeding programs to select for improved transpiration efficiency. The correlation between δ^13C and transpiration efficiency was determined under well-watered conditions during the vegetative phase in six genotypes of lentil （Lens culinaris Medikus）, six genotypes of chickpea （Cicerarietinum L.） and 10 cultivars of narrow-leafed lupin （Lupinus angustifolius L.）. Biomass （dry matter） accumulation and water use （transpiration） varied among the genotypes in all three species and transpiration efficiency was 40% to 75% higher in the most efficient compared with the least efficient genotypes. However, δ^13C and transpiration efficiency were not significantly correlated in any of the species. This suggests that the δ^13C technique cannot be used in selection for transpiration efficiency in the three grain legumes （pulses） studied.
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| 关 键 词： | 生物量蓄积 鹰嘴豆 繁殖能力 植物生理 |
| 修稿时间： | 2006-11-25 |
Carbon Isotope Discrimination is not Correlated with Transpiration Efficiency in Three Cool-Season Grain Legumes (Pulses) |
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| Authors: | Neil C Turner Jairo A Palta Renuka Shrestha Christiane Ludwig Kadambot H M Siddique David W Turner |
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| Institution: | 1.Centre for Legumes in Mediterranean Agricuiture, MO80, The University of Western Australia, 35 Stiding Highway, Crawley, WA 6009, Australia;2.CSIRO Plant Industry, Private Mail Bag No. 5, Wembley, WA 6913, Australia;3.School of Plant Biology, M084, Institute of Agriculture, The University of Westem Austrafia, 35 Stirling Highway, Crawley, WA 6009, Australia |
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| Abstract: | The carbon isotope discrimination (δ13C) of leaves has been shown to be correlated with the transpiration efficiency of leaves in a wide range of species. This has led to δ13C being used in breeding programs to select for improved transpiration efficiency. The correlation between δ13C and transpiration efficiency was determined under well‐watered conditions during the vegetative phase in six genotypes of lentil (Lens culinaris Medikus), six genotypes of chickpea (Cicer arietinum L.) and 10 cultivars of narrow‐leafed lupin (Lupinus angustifolius L.). Biomass (dry matter) accumulation and water use (transpiration) varied among the genotypes in all three species and transpiration efficiency was 40% to 75% higher in the most efficient compared with the least efficient genotypes. However, δ13C and transpiration efficiency were not significantly correlated in any of the species. This suggests that the δ13C technique cannot be used in selection for transpiration efficiency in the three grain legumes (pulses) studied. |
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| Keywords: | biomass accumulation breeding chickpea lupin Cicer arietinum Lens culinaris lentil Lupinus angustifolius water use |
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