干旱区生态环境知识资源中心(Arid): 荒漠植物准噶尔无叶豆结实、结籽格局及其生态适应意义

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	荒漠植物准噶尔无叶豆结实、结籽格局及其生态适应意义
其他题名	Patterns of fruit and seed production and ecological significance in desert species Eremosparton songoricum(FABACEAE)
	施翔; 王建成; 张道远; 刘会良
来源期刊	生态学报
ISSN	1000-0933
出版年	2011
卷号	31 期号:17 页码:4935-4940
中文摘要	连续2a采用野外记录的方式对荒漠植物准噶尔无叶豆的结实、结籽格局进行了比较研究。结果表明:植株内花序生成格局表现为不同大小的花序在总花序中的比重与其结实率存在显著正相关，其中含有中等花数目的花序所占的比重及其结实率均最高，此种分布格局能够最大程度的保证繁殖成功;果序内果实生成格局表现为单花着生位置(从近柄端算起)与其结实量占总结实量的比例成线性负相关，花序基部的结实比例最高，顶部结实比例近为0;荚果内种子生成格局表现为:中间位置的胚珠败育率最低。另外，年际间荚果内仅有(1．080．03)粒和(1．070．03)粒种子能够完全成熟，此种结籽格局是准噶尔无叶豆保证后代质量的最佳策略。
英文摘要	Plant reproductive modules include flowers,inflorescences,fruits and seeds,and also the reproductive branches that bear these plant parts,which have certain distribution pattern and quantitative change dynamics．Selective abortion is one of the sources of seed plant fruiting and seeding patterns．In order to determine the patterns of fruit production among and within inflorescences,seed production within pods,and further examine the evolutionary,ecological significance of selective abortion in a desert species Eremosparton songoricum(Litv．)Vass．,we did our research over two years in a wild population in the north edge of Gurbantunggut Desert,XinJiang,China．To record the fruit production among inflorescences,141 and 105 inflorescences from twenty individual plants were randomly chosen in 2007 and 2008,respectively．Fruit development and position within each inflorescence were monitored daily,and the number of completely mature fruits within each inflorescence was counted to get the frequency distribution and the fruit set of different inflorescence sizes．To determine percentage of fruit production from basal position to distal position within the inflorescences,100 inflorescences with 16 and 13 flowers were chosen in 2007 and 2008,respectively．To determine the seed production within pods,300 completely mature fruits were randomly chosen in 2007 and 2008 to monitor the seed production from basal position to distal position within each pod．Results showed that the frequency distribution and fruit set of different inflorescence sizes were positively correlated,with the middle inflorescence size being the most frequent and also having the highest fruit set,which appears to be the optimal reproductive strategy;The flowers from the basal position of an inflorescence were more likely to set fruit,which appears to maintain the reproductive success from the adaptive strategy angle,and the percentage of fruit production at the distal position of an inflorescence was approximately zero which may be make up to the loss of basal flowers of an inflorescence caused by desert weather condition or distal flower may play more important role in male function for attracting more insects rather than bearing fruit;Ovules from the middle position within an ovary were more likely to produce seed．There were an average of only 1．080．03 and 1．070．03 seeds matured per pod in 2007 and 2008,respectively．Producing one seed per pod may be the optimal strategy in this limited resource desert situation,with the single seed appearing to be of higher quality(16．230．30)mg than those derived from multi-seed pods (18．440．32)mg．Also,a single seeded pod,compared with two or three seeds within one pod,can lower the weight of the dispersal fruit unit,which will improve the dispersal distance and then play an important role in occupying new habitats for this rare species．
中文关键词	准噶尔无叶豆 ; 结实格局 ; 结籽格局 ; 繁殖成功
英文关键词	E.songoricum fruiting pattern seeding pattern reproductive success
语种	中文
国家	中国
收录类别	CSCD
WOS类目	ENVIRONMENTAL SCIENCES ; AGRICULTURE MULTIDISCIPLINARY
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
CSCD记录号	CSCD:4326343
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/226958
作者单位	中国科学院新疆生态与地理研究所, 中国科学院干旱区生物地理与生物资源重点实验室, 乌鲁木齐, 新疆 830011, 中国
推荐引用方式 GB/T 7714	施翔,王建成,张道远,等. 荒漠植物准噶尔无叶豆结实、结籽格局及其生态适应意义[J]. 中国科学院新疆生态与地理研究所,2011,31(17):4935-4940.
APA	施翔,王建成,张道远,&刘会良.(2011).荒漠植物准噶尔无叶豆结实、结籽格局及其生态适应意义.生态学报,31(17),4935-4940.
MLA	施翔,et al."荒漠植物准噶尔无叶豆结实、结籽格局及其生态适应意义".生态学报 31.17(2011):4935-4940.