Photosynthate distribution in wheat varieties differing in phosphorus efficiency

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 环境纳米材料实验室

	Photosynthate distribution in wheat varieties differing in phosphorus efficiency
	Zou, CQ; Li, JY; Li, ZS; Zhang, FS; Tong, YP; Chen, XP; Hou, LJ; Wang, XF
刊名	COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS
	2002
卷号	33 期号:19-20 页码:3767-3777
关键词	phosphorus efficiency photosynthates distribution wheat genotype
英文摘要	The distribution of phosphorus (P), photosynthates, and the amount of assimilated C-14 secreted as root exudate were measured in wheat genotypes differing in phosphorus efficiency. Two wheat genotypes, one P-efficient (Triticum aestivum L., cv. Xiaoyan 54) and the other inefficient (Triticum aestivum L., cv. Jing 411) were used in this study. The plants were cultivated in solution culture for 4 weeks under controlled conditions. Xiaoyan 54 had higher relative yield, higher P concentration in roots and higher root/shoot ratio than Jing 411 under P-deficient condition. Xiaoyan 54 distributed more P and assimilated carbon to the roots than Jing 411 under P deficiency and also released a higher percentage of assimilated 14 C as root exudates. The percentage released was 3.98% for Xiaoyan 54 and 2.47% for Jing 411 under P deficiency, and 2.95% and 3.28%, respectively, under P-sufficiency. However, P deficiency led to more assimilated 14 C being partitioned to roots by both wheat genotypes. Regardless of genotypes, the 14 C distributed to roots of P-deficient plants was 5 to 6 times that of P-sufficient plants. The P-efficient genotype translocated more assimilated C-14 to roots than the P-inefficient genotype under P deficiency and the difference between the two genotypes were smaller under P sufficiency. It is concluded that Xiaoyan 54 has higher relative biomass and better root system under P limited condition, which main reasons are that Xiaoyan 54 can maintain a higher P concentration, release more root exudate, and distribute P to roots.
研究领域[WOS]	Agriculture ; Plant Sciences ; Chemistry
WOS记录号	WOS:000179962000017
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/23911]
专题	生态环境研究中心_环境纳米材料实验室
推荐引用方式 GB/T 7714	Zou, CQ,Li, JY,Li, ZS,et al. Photosynthate distribution in wheat varieties differing in phosphorus efficiency[J]. COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS,2002,33(19-20):3767-3777.
APA	Zou, CQ.,Li, JY.,Li, ZS.,Zhang, FS.,Tong, YP.,...&Wang, XF.(2002).Photosynthate distribution in wheat varieties differing in phosphorus efficiency.COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS,33(19-20),3767-3777.
MLA	Zou, CQ,et al."Photosynthate distribution in wheat varieties differing in phosphorus efficiency".COMMUNICATIONS IN SOIL SCIENCE AND PLANT ANALYSIS 33.19-20(2002):3767-3777.