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云南松苗木分化对生物量分配的影响

Li Yaqi Nie Kaihong Wang Junmin Sun Jiwei Chen Shi Xu Yulan Cai Nianhui

山西农业大学学报（自然科学版）2019，Vol.39Issue(5)：41-45,5.
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山西农业大学学报（自然科学版）2019，Vol.39Issue(5)：41-45,5.DOI:10.13842／j.cnki.issn1671-8151.201901001

云南松苗木分化对生物量分配的影响

The impact of seedling differentiation on the biomass allocation of Pinusyunnanensis

Li Yaqi 1Nie Kaihong 1Wang Junmin 1Sun Jiwei 1Chen Shi 1Xu Yulan 1Cai Nianhui2

作者信息

  • 1. Key Laboratory for Forest Resources Conservation and Utiliz ation in the Southwest Mountains o f ChinaSouthwest Forestry University ,Ministry o f Education ,Kunming 650224 ,China
  • 2. Key L aboratory for Forest Genetic and Tree Im p rovement and Propagation in Universities o f Y unnan Province ,Southwest Forestry University ,K unming 650224 ,China
  • 折叠

摘要

Abstract

[Objectives] T he aim of present study were to reveal the impacts of seedling differentiation on the biomass al-location by analyzing the investment and allocation strategies of biomass of two-year-old seedlings of Pinusyunnanensis at six different classes .[M ethods]P.yunnanensis seedlings were divided into six different classes to reveal the impacts of seedling differentiation on the biomass allocation .[Results] T he results showed that the biomass investment of seed-ling was following the order of leaf＞ stem＞ root .With the decrease of seedling class ,the biomass of individual plant , aboveground part ,and each component of plants was decreased too ,w hile the relative proportions of leaves biomass was increased and stem biomass was decreased gradually ,and the ratios of leaf to steam and photosynthetic to non-photosyn-thetic organs were increased gradually .No significant difference of the root shoot biomass ratio between different seed-ling classes was detected .M eanw hile ,moisture content of individual plant including aboveground and each component were increased weakly w hen the seedling class level was decreased ,but there was no significant difference between the seedling classes .[Conclusion] Seedlings of P.yunnanensis displayed different biomass allocation strategies in different classes .T he priority allocation of biomass was made to leaves in lower seedling class and the biomass allocation percent-age to stem was increased gradually with the increase of seedling class .

关键词

云南松/苗木分化/生物量分配/策略

Key words

Pinusyunnanensis/Seedling differentiation/Biomass allocation/Strategy

分类

农业科技

引用本文复制引用

Li Yaqi,Nie Kaihong,Wang Junmin,Sun Jiwei,Chen Shi,Xu Yulan,Cai Nianhui..云南松苗木分化对生物量分配的影响[J].山西农业大学学报（自然科学版）,2019,39(5):41-45,5.

基金项目

国家自然科学基金(31760204 ,31860203) （31760204 ,31860203）

云南省林学一流学科建设经费资助 （）

云南省高校林木遗传改良与繁育重点实验室基金(YNGBT201702 ,YNGBS201704) （YNGBT201702 ,YNGBS201704）

山西农业大学学报（自然科学版）

OA北大核心CSTPCD

1671-8151

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