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	Endogenous hormones in seed, leaf, and pod wall and their relationship to seed filling in soybeans
	Liu, Bing1,2,3; Liu, Xiao-bing1; Wang, Cheng1; Jin, Jian1; Herbert, S. J.4
刊名	Crop & pasture science
	2010
卷号	61期号:2页码:103-110
关键词	Soybean Reproductive stage Plant hormone Seed growth
ISSN号	1836-5795
DOI	10.1071/cp09189
通讯作者	Liu, xiao-bing(liuxb@neigae.ac.cn)
英文摘要	In order to investigate the possible relationship between endogenous hormones and seed filling in soybeans, concentrations of abscisic acid (aba), gibberellins (ga(3)), indole-3-acetic acid (iaa), and cytokinins (zr) in seed, leaf, and pod wall were determined during seed filling of 3 soybean cultivars differing in seed size and quality. all cultivars were grown at 3 densities. the large-seeded cultivar had a strong and greater ability to accumulate photosynthate during seed filling. the genetic trait of seed size was fully expressed at low density. the large-seeded cultivar had a much higher aba concentration in seed than the moderate and small-seeded cultivars before physiological maturity. aba concentration in the large-seeded cultivar seed was 40% greater than that of the small-seeded cultivar at 30 days after flowering. higher densities increased aba concentrations in seeds. two peaks of seed ga(3) concentration were observed during seed filling. ga(3) concentrations at all densities were similar. the peaks of iaa concentration in the 3 cultivars uniformly occurred at 50 days after flowering. the large-seeded cultivar had greater peak concentrations of ga(3) and iaa in seed than the other cultivars, while the peak concentration of zr was highest in the small-seeded cultivar. the concentrations of aba in leaf increased with time while that of ga(3) decreased. the large-seeded cultivar had higher aba and iaa concentration in leaf while the small-seeded cultivar consistently had higher ga(3) concentration in leaf. zr was present in a smaller amount in the leaf, and was not detected in the pod wall. the large-seeded cultivar maintained higher iaa concentration in pod wall. aba concentration in seed was positively correlated with seed-filling rate (p < 0.01, r = 0.85**, 0.92**, and 0.83** for large-, moderate-and small-seeded cultivars respectively). the concentration of ga(3) in seed was significantly correlated with the seed-filling rate in large and moderate-seeded cultivars (p < 0.01, r = 0.87**; p < 0.05, r = 0.63*), and no correlation was found for the small-seeded cultivar. there was no correlation between the concentrations of seed iaa, zr, and seed-filling rate. there was a parallel relationship between seed growth and leaf/pod wall aba concentration. thus, aba might offer a driving force for photosynthate phloem unloading in the seed coat. lower concentration of aba and ga(3) in the leaf than in seed suggests that most of the two hormones is transported to seed. the mechanism of iaa in seed growth and ga(3) concentration and its dynamic in seed quality need further investigation.
WOS关键词	ABSCISIC-ACID ; GROWTH-REGULATORS ; WATER-STRESS ; ABA ; GRAINS ; PLANTS ; RICE ; POLLINATION ; NODULATION ; TRANSPORT
WOS研究方向	Agriculture
WOS类目	Agriculture, Multidisciplinary
语种	英语
出版者	CSIRO PUBLISHING
WOS记录号	WOS:000274317900001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2414906
专题	中国科学院大学
通讯作者	Liu, Xiao-bing
作者单位	1.Chinese Acad Sci, Key Lab Black Soil Ecol, NE Inst Geog & Agroecol, Harbin 150081, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Jilin Normal Univ, Coll Life Sci, Siping 136000, Peoples R China 4.Univ Massachusetts, Dept Plant Soil & Insect Sci, Amherst, MA 01003 USA
推荐引用方式 GB/T 7714	Liu, Bing,Liu, Xiao-bing,Wang, Cheng,et al. Endogenous hormones in seed, leaf, and pod wall and their relationship to seed filling in soybeans[J]. Crop & pasture science,2010,61(2):103-110.
APA	Liu, Bing,Liu, Xiao-bing,Wang, Cheng,Jin, Jian,&Herbert, S. J..(2010).Endogenous hormones in seed, leaf, and pod wall and their relationship to seed filling in soybeans.Crop & pasture science,61(2),103-110.
MLA	Liu, Bing,et al."Endogenous hormones in seed, leaf, and pod wall and their relationship to seed filling in soybeans".Crop & pasture science 61.2(2010):103-110.

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