Water and nutrient use efficiency in diploid tetraploid and hexaploid wheats

ISWC OpenIR > 水保所知识产出(1956---)

	Water and nutrient use efficiency in diploid tetraploid and hexaploid wheats
	Huang Ming-Li; Deng Xi-Ping; Zhao Yu-Zong; Deng, XP
	2007
发表期刊	JOURNAL OF INTEGRATIVE PLANT BIOLOGY
卷号	49 期号:5 页码:706-715
摘要	Three diploid (Triticum boeoticum, AA; Aegilops speltoides, BB and Ae. tauschii, DD), two tetraploid (T. dicoccoides, AABB and T. dicoccon, AABB) and one hexaploid (T. vulgare, AABBDD) varieties of wheat, which are very important in the evolution of wheat were chosen in this study. A pot experiment was carried out on the wheat under different water and nutrient conditions (i) to understand the differences in biomass, yield, water use efficiency (WUE), and nutrient (N, P and K) use efficiency (uptake and utilization efficiency) among ploidies in the evolution of wheat; (ii) to clarify the effect of water and nutrient conditions on water and nutrient use efficiency; and (iii) to assess the relationship of water and nutrient use efficiency in the evolution of wheat. Our results showed that from diploid to tetraploid then to hexaploid during the evolution of wheat, both root biomass and above-ground biomass increased initially and then decreased. Water consumption for transpiration decreased remarkably, correlating with the decline of the growth period, while grain yield, harvest index, WUE, N, P and K uptake efficiency, and N, P and K utilization efficiency increased significantly. Grain yield, harvest index and WUE decreased in the same order: T. vulgare > T. dicoccon > T. dicoccoides > Ae. tauschii > Ae. speltoides > T. boeoticum. Water stress significantly decreased root biomass, above-ground biomass, yield, and water consumption for transpiration by 47-52%, but remarkably increased WUE. Increasing the nutrient supply increased wheat above-ground biomass, grain yield, harvest index, water consumption for transpiration and WUE under different water levels, but reduced root biomass under drought conditions. Generally, water stress and low nutrient supply resulted in the lower nutrient uptake efficiency of wheat. However, water and nutrient application had no significant effects on nutrient utilization efficiency, suggesting that wheat nutrient utilization efficiency is mainly controlled by genotypes. Compared to the other two diploid wheats, Ae. squarrosa(DD) had significant higher WUE and nutrient utilization efficiency, indicating that the D genome may carry genes controlling high efficient utilization of water and nutrient. Significant relationships were found between WUE and N, P and K utilization efficiency.
关键词	Diploid Evolution Hexaploid Nutrient Uptake Efficiency Nutrient Utilization Efficiency Tetraploid Water Use Efficiency Wheat
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	sbir.nwafu.edu.cn/handle/361005/4882
专题	水保所知识产出(1956---)
通讯作者	Deng, XP
推荐引用方式 GB/T 7714	Huang Ming-Li,Deng Xi-Ping,Zhao Yu-Zong,et al. Water and nutrient use efficiency in diploid tetraploid and hexaploid wheats[J]. JOURNAL OF INTEGRATIVE PLANT BIOLOGY,2007,49(5):706-715.
APA	Huang Ming-Li,Deng Xi-Ping,Zhao Yu-Zong,&Deng, XP.(2007).Water and nutrient use efficiency in diploid tetraploid and hexaploid wheats.JOURNAL OF INTEGRATIVE PLANT BIOLOGY,49(5),706-715.
MLA	Huang Ming-Li,et al."Water and nutrient use efficiency in diploid tetraploid and hexaploid wheats".JOURNAL OF INTEGRATIVE PLANT BIOLOGY 49.5(2007):706-715.

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