|本期目录/Table of Contents|

[1]李鹏,刘济明,颜强,等.干旱胁迫对小蓬竹繁殖和某些生理特性的影响[J].江苏农业科学,2014,42(08):181-184.
 Li Peng,et al.Effects of drought stress on reproduction and some physiological characteristics of Drepanostachyum luodianense[J].Jiangsu Agricultural Sciences,2014,42(08):181-184.
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《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第42卷
期数:
2014年08期
页码:
181-184
栏目:
园艺园林
出版日期:
2014-08-25

文章信息/Info

Title:
Effects of drought stress on reproduction and some physiological characteristics of Drepanostachyum luodianense
作者:
李鹏1 刘济明1 颜强1 池馨1 廖小锋2 王军才1
1.贵州大学林学院,贵州贵阳 550025; 2.贵州科学院/贵州省山地资源研究所,贵州贵阳 550001
Author(s):
Li Penget al
关键词:
小蓬竹干旱胁迫繁殖相对含水量生理特性根系活力
Keywords:
-
分类号:
Q945.78
DOI:
-
文献标志码:
A
摘要:
以小蓬竹幼苗为材料,采用人工控水的方法,设置轻度干旱、中度干旱和重度干旱3个水分胁迫梯度以及对照(CK),研究小蓬竹相关生理特性对水分胁迫的响应情况。经过70 d水分胁迫试验,结果发现:与CK相比,随着干旱胁迫强度的增加,小蓬竹的叶片逐渐减少,轻度干旱胁迫影响较小,而在中度和重度干旱胁迫条件下显著减少;在轻度、中度干旱胁迫下的出竹率和成笋率较CK变化不显著,但重度干旱条件下极显著低于CK。在轻度干旱胁迫条件下,水分饱和亏及小枝水势与CK差异不显著;在中度、重度干旱胁迫条件下,水分饱和亏显著或极显著提高,小枝水势与水分饱和亏变化趋势相反。小蓬竹根系活力在各处理下大小为轻度干旱胁迫>重度干旱胁迫>中度干旱胁迫>CK,其中轻度干旱胁迫为CK的2.42倍。有研究认为,小蓬竹通过减小地上蒸发面积、减少出竹率、维持根的活力等多种形态与生理策略,实现对干旱胁迫较强的忍耐性和较好的适应性。
Abstract:
-

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备注/Memo

备注/Memo:
收稿日期:2014-01-14
基金项目:贵州省国际科技合作计划[编号:黔科合外G字(2013)7010号]。
作者简介:李鹏(1987—),男,安徽宿州人,硕士研究生,从事野生植物资源保护与利用研究。E-mail:lp761410952@163.com。
通信作者:刘济明,教授,硕士研究生导师,从事植物生态学研究。E-mail:karst0623@163.com。
更新日期/Last Update: 2014-08-25