Reproductive allocation patterns in different density populations of spring wheat
文献类型：期刊论文
| 作者 | Liu, Jing2,3 ; Wang, Gen-Xuan1; Wei, Liang3; Wang, Chun-Ming3
|
| 刊名 | JOURNAL OF INTEGRATIVE PLANT BIOLOGY
 |
| 出版日期 | 2008-02-01 |
| 卷号 | 50页码:141-146 |
| 关键词 | competition density reproductive allocation |
| ISSN号 | 1672-9072 |
| DOI | 10.1111/j.1744-7909.2007.00602.x |
| 英文摘要 | The effects of increased intraspecific competition on size hierarchies (size inequality) and reproductive allocation were investigated in populations of the annual plant, spring wheat (Triticum aestivum). A series of densities (100, 300, 1000, 3 000 and 10 000 plants/m(2)) along a gradient of competition intensity were designed in this experiment. The results showed that average shoot biomass decreased with increased density. Reproductive allocation was negatively correlated to Gini coefficient (R-2=0.927), which suggested that reproductive allocation is inclined to decrease as size inequality increases. These results suggest that both vegetative and reproductive structures were significantly affected by intensive competition. However, results also indicated that there were different relationships between plant size and reproductive allocation pattern in different densities. In the lowest density population, lacking competition (100 plants/m2), individual reproductive allocation was size independent but, in high density populations (300, 1 000, 3 000 and 10 000 plants/m2), where competition occurred, individual reproductive allocation was size dependent: the small proportion of larger individuals were winners in competition and got higher reproductive allocation (lower marginal reproductive allocation; MRA), and the larger proportion of smaller individuals were suppressed and got lower reproductive allocation (higher MRA). In conclusion, our results support the prediction that elevated intraspecific competition would result in higher levels of size inequality and decreased reproductive allocation (with a negative relationship between them). However, deeper analysis indicated that these frequency- and size-dependent reproductive strategies were not evolutionarily stable strategies. |
| WOS关键词 | PLANT-POPULATIONS ; GROWTH REDUNDANCY ; SIZE HIERARCHIES ; GRAIN-YIELD ; COMPETITION ; VARIABILITY ; INEQUALITY |
| WOS研究方向 | Biochemistry & Molecular Biology ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000253050100002 |
| 出版者 | WILEY-BLACKWELL |
| 源URL | [http://119.78.100.186/handle/113462/29537]  |
| 专题 | 近代物理研究所_生物物理研究室 |
| 通讯作者 | Wang, Gen-Xuan |
| 作者单位 | 1.Zhejiang Univ, Coll Life Sci, Hangzhou 310027, Peoples R China 2.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 3.Lanzhou Univ, Key Lab Arid & Grassland Agroecol, Minist Educ, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Jing,Wang, Gen-Xuan,Wei, Liang,et al. Reproductive allocation patterns in different density populations of spring wheat[J]. JOURNAL OF INTEGRATIVE PLANT BIOLOGY,2008,50:141-146. |
| APA | Liu, Jing,Wang, Gen-Xuan,Wei, Liang,&Wang, Chun-Ming.(2008).Reproductive allocation patterns in different density populations of spring wheat.JOURNAL OF INTEGRATIVE PLANT BIOLOGY,50,141-146. |
| MLA | Liu, Jing,et al."Reproductive allocation patterns in different density populations of spring wheat".JOURNAL OF INTEGRATIVE PLANT BIOLOGY 50(2008):141-146. |
入库方式： OAI收割
来源：近代物理研究所
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