Sex-differentiation and number of female flowers for polygamous inflorescences of<em> Jatropha curcas</em> in two drainage basins

LIU Fang-yan; LI Kun; WANG Xiao-qing; ZHANG Chun-hua; LUO Chang-wei; CUI Yong-zhong; PENG Hui

doi:10.11833/j.issn.2095-0756.2010.05.008

Volume 27 Issue 5

Oct. 2010

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Article Navigation > Journal of Zhejiang A&F University > 2010 > 27(5): 684-690

LIU Fang-yan, LI Kun, WANG Xiao-qing, ZHANG Chun-hua, LUO Chang-wei, CUI Yong-zhong, PENG Hui. Sex-differentiation and number of female flowers for polygamous inflorescences of Jatropha curcas in two drainage basins[J]. Journal of Zhejiang A&F University, 2010, 27(5): 684-690. doi: 10.11833/j.issn.2095-0756.2010.05.008

Citation:

LIU Fang-yan, LI Kun, WANG Xiao-qing, ZHANG Chun-hua, LUO Chang-wei, CUI Yong-zhong, PENG Hui. Sex-differentiation and number of female flowers for polygamous inflorescences of Jatropha curcas in two drainage basins[J]. Journal of Zhejiang A&F University, 2010, 27(5): 684-690. doi: 10.11833/j.issn.2095-0756.2010.05.008

Sex-differentiation and number of female flowers for polygamous inflorescences of Jatropha curcas in two drainage basins

doi: 10.11833/j.issn.2095-0756.2010.05.008

1.
Research Institute of Resources Insects，The Chinese Academy of Forestry，Kunming 650224，Yunnan，China;
2.
College of Biological Sciences and Biotechnology，Beijing Forestry University，Beijing 100083，China;
3.
Yuanmou Desert Ecosystem Research Statian，State Forestry Administration，Kunming 650224，Yunnan，China

More Information

Corresponding author: LI Kun
Publish Date: 2010-10-20

Abstract

Based on random samples（30 trees for each area） and tracking observations，sex-differentiation characteristics and female flower numbers of semi-wild Jatropha curcas in the hot，dry valleys of the Jinshajiang and Red River Basins during the first and second flowering periods were studied. Results showed only a few polygamous inflorescences growing on one-year-old branches in both river basins. Polygamous inflorescence differentiation in both river basins was more than the male inflorescence during the first flowering with slightly less than the male inflorescence in the second flowering. Male flowers more than female flowers in polygamous inflorescence（＞15 ∶ 1）. In both river basins，during the first flowering，most of the polygamous inflorescences had 6－10 female flowers，and only 2% － 3% had more than 16 female flowers；during the second flowering，the female flowers numbered fewly with more than 80% of the polygamous inflorescences having 1－5 female flowers and no polygamous inflorescences having more than 16 female flowers. Polygamous inflorescence number，female flower number，and the rate of fruiting during the first flowering periods were greater in the Jinshajiang River Basin.［Ch，4 fig. 2 tab. 17 ref.］
- forest biology,
- hot dry valley,
- Jatropha curcas,
- sex differentiation,
- female flower

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Sex-differentiation and number of female flowers for polygamous inflorescences of Jatropha curcas in two drainage basins

1. Research Institute of Resources Insects，The Chinese Academy of Forestry，Kunming 650224，Yunnan，China;

2. College of Biological Sciences and Biotechnology，Beijing Forestry University，Beijing 100083，China;

3. Yuanmou Desert Ecosystem Research Statian，State Forestry Administration，Kunming 650224，Yunnan，China

Corresponding author: LI Kun

Publish Date: 2010-10-20

Key words:

Abstract: Based on random samples（30 trees for each area） and tracking observations，sex-differentiation characteristics and female flower numbers of semi-wild Jatropha curcas in the hot，dry valleys of the Jinshajiang and Red River Basins during the first and second flowering periods were studied. Results showed only a few polygamous inflorescences growing on one-year-old branches in both river basins. Polygamous inflorescence differentiation in both river basins was more than the male inflorescence during the first flowering with slightly less than the male inflorescence in the second flowering. Male flowers more than female flowers in polygamous inflorescence（＞15 ∶ 1）. In both river basins，during the first flowering，most of the polygamous inflorescences had 6－10 female flowers，and only 2% － 3% had more than 16 female flowers；during the second flowering，the female flowers numbered fewly with more than 80% of the polygamous inflorescences having 1－5 female flowers and no polygamous inflorescences having more than 16 female flowers. Polygamous inflorescence number，female flower number，and the rate of fruiting during the first flowering periods were greater in the Jinshajiang River Basin.［Ch，4 fig. 2 tab. 17 ref.］

Sex-differentiation and number of female flowers for polygamous inflorescences of Jatropha curcas in two drainage basins

doi: 10.11833/j.issn.2095-0756.2010.05.008

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Sex-differentiation and number of female flowers for polygamous inflorescences of Jatropha curcas in two drainage basins

doi: 10.11833/j.issn.2095-0756.2010.05.008

Corresponding author: LI Kun

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Sex-differentiation and number of female flowers for polygamous inflorescences of Jatropha curcas in two drainage basins

doi: 10.11833/j.issn.2095-0756.2010.05.008

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通讯作者: 陈斌, bchen63@163.com

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Sex-differentiation and number of female flowers for polygamous inflorescences of Jatropha curcas in two drainage basins

doi: 10.11833/j.issn.2095-0756.2010.05.008

Corresponding author: LI Kun

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