Pollen source and resource limitation to fruit production in the rare species Eremosparton songoricum (Fabaceae)

CORC > 新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所(2010年以前数据)

	Pollen source and resource limitation to fruit production in the rare species Eremosparton songoricum (Fabaceae)
	Shi ; Wang ; Zhang ; Gaskin ; Pan ; Xiang ; Jian-Cheng ; Dao-Yuan ; John ; Bo-Rong
刊名	NORDIC JOURNAL OF BOTANY
	2010
卷号	28 期号:4 页码:438-444
关键词	SEED-SET REPRODUCTIVE SUCCESS PLANT REPRODUCTION POLLINATION CONSEQUENCES PATTERNS SIZE POPULATION FITNESS FLOWERS
ISSN号	0107-055X
通讯作者	Shi, XA, Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Key Lab Biogeog & Bioresource Arid Land, CN-830011 Urumqi, Peoples R China
中文摘要	Eremosparton songoricum (Litv.) Vass. is a rare, central Asian desert species which shows lower fruit set and seed set (< 16%) than most hermaphroditic species. We hypothesized that fruit production was limited by pollen and resources. To evaluate potential fruit abortion due to pollen limitation, supplemental hand-pollination was undertaken, the mating system was investigated and the foraging behavior of pollinators was recorded. To investigate possibile resource limitation, flowers and young pods were artificially removed and fertilization were manipulated. The results showed that under natural pollination, the number of pollen deposited on the stigma greatly exceed the number of ovules per ovary. Mating system experiments showed that the species is self-compatible, but depended on pollinators to set seeds. Supplemental outcross pollination increased fruit set significantly. The most frequent effective pollinator Megachile terminate Morawitz, was observed pollinating many flowers of the same individual plant (74.5 +/- 1.3%). These results suggested that fruit production is affected by insufficient outcross pollen rather than by pollen quantity. Removal of 2/3 of the flowers and young pods led to significantly higher fruit set, as did addition of fertilizers (N-P-K: 0.025-0.05-0.013 g, N-P-K: 0.05-0.1-0.025 g) showing that reducing resource acceptors and increasing inorganic resources both helps to improve fruit set. We therefore conclude that reproductive success of E. songoricum is limited by both outcross pollen and available nutrients.
学科主题	植物生理学
收录类别	SCI
公开日期	2011-08-19
内容类型	期刊论文
源URL	[http://ir.xjlas.org/handle/365004/9900]
专题	新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据)
推荐引用方式 GB/T 7714	Shi,Wang,Zhang,et al. Pollen source and resource limitation to fruit production in the rare species Eremosparton songoricum (Fabaceae)[J]. NORDIC JOURNAL OF BOTANY,2010,28(4):438-444.
APA	Shi.,Wang.,Zhang.,Gaskin.,Pan.,...&Bo-Rong.(2010).Pollen source and resource limitation to fruit production in the rare species Eremosparton songoricum (Fabaceae).NORDIC JOURNAL OF BOTANY,28(4),438-444.
MLA	Shi,et al."Pollen source and resource limitation to fruit production in the rare species Eremosparton songoricum (Fabaceae)".NORDIC JOURNAL OF BOTANY 28.4(2010):438-444.