Reduced abscisic acid content is responsible for enhanced sucrose accumulation by potassium nutrition in vegetable soybean seeds

	Reduced abscisic acid content is responsible for enhanced sucrose accumulation by potassium nutrition in vegetable soybean seeds
	B. J. Tu, C. K. Liu, B. W. Tian, Q. Y. Zhang, X. B. Liu and S. J. Herbert
刊名	Journal of Plant Research
	2017
卷号	130 期号:3 页码:551-558
通讯作者	张秋英
中文摘要	In order to understand the physiological mechanism of potassium (K) application in enhancing sugar content of vegetable soybean seeds, pot experiments were conducted in 2014 and 2015 with two vegetable soybean (Glycine max L. Merr.) cultivars (c.v. Zhongkemaodou 1 and c.v. 121) under normal rate of nitrogen and phosphorus application. Three potassium (K) fertilization treatments were imposed: No K application (K0), 120 kg K2SO4 ha(-1) at seeding (K1), and 120 kg K2SO4 ha(-1) at seedling + 1% K2SO4 foliar application at flowering (K2). Contents of indole-3-acetic acid (IAA), gibberellins (GA), cytokinins (ZR) and abscisic acid (ABA) in seeds were determined from 4 to 8 weeks after flowering. K fertilization increased the contents of IAA, GA, ZR, soluble sugar, sucrose and fresh pod yield, but reduced ABA content consistently. When the contents of soluble sugar and sucrose reached the highest level at 7 weeks after flowering for the 2 cultivars, the contents of IAAaEuroGAaEuroZR all reached the lowest level in general. The content of ABA in seed was negatively correlated with the sucrose content (P < 0.01, r = -0.749, -0.768 in 2014 and -0.535, -0.791 in 2015 for c.v.121 and c.v. Zhongkemaodou 1 respectively). The changes in ratio of the ABA to (IAA + GA + ZR) from 4 to 8 weeks after flowering affected by K application were coincident to the changes of sucrose accumulation. The reduced ratio of ABA/(IAA + GA + ZR) affected by K nutrition particularly reduced abscisic acid content plays a critical role in enhancing sucrose content, which might be a partial mechanism involved in K nutrition to improve the quality of vegetable soybean.
内容类型	期刊论文
源URL	[http://ir.iga.ac.cn/handle/131322/7629]
专题	东北地理与农业生态研究所_湿地与全球变化学科组_期刊论文
推荐引用方式 GB/T 7714	B. J. Tu, C. K. Liu, B. W. Tian, Q. Y. Zhang, X. B. Liu and S. J. Herbert. Reduced abscisic acid content is responsible for enhanced sucrose accumulation by potassium nutrition in vegetable soybean seeds[J]. Journal of Plant Research,2017,130(3):551-558.
APA	B. J. Tu, C. K. Liu, B. W. Tian, Q. Y. Zhang, X. B. Liu and S. J. Herbert.(2017).Reduced abscisic acid content is responsible for enhanced sucrose accumulation by potassium nutrition in vegetable soybean seeds.Journal of Plant Research,130(3),551-558.
MLA	B. J. Tu, C. K. Liu, B. W. Tian, Q. Y. Zhang, X. B. Liu and S. J. Herbert."Reduced abscisic acid content is responsible for enhanced sucrose accumulation by potassium nutrition in vegetable soybean seeds".Journal of Plant Research 130.3(2017):551-558.