期刊论文

Effects of drought stress on physiological and biochemical characteristics of four Camellia oleifera varieties seedlings

中文

经济林研究

1003-8981

2019

37

2

104-113

10.14067/j.cnki.1003-8981.2019.02.015

湖南省重点研发项目(2017NK2201)。

本校为第一机构

为给耐旱性油茶品种的选育提供科学依据,以‘华鑫’‘华硕’‘长林40’和‘长林4号’这4个红壤丘陵区主栽油茶品种2年生嫁接苗为研究材料,采用盆栽控水的方法,分别设置了重度干旱胁迫、中度干旱胁迫和对照3种处理进行试验,对4个油茶品种在不同干旱条件下11个生理生化指标的变化情况进行了观测,并采用隶属函数法对4个油茶品种苗木的抗旱性进行了综合评价。试验结果表明:随着干旱程度的加重和干旱时间的延长,4个油茶品种苗木叶片叶绿素含量都有不同程度的降低,其中‘华硕’的下降幅度最大,为40.96%;其净光合速率、气孔导度、叶片蒸腾速率都呈下降趋势,其平均下降率分别为12.81%、48.03%、42.54%;其...

In order to provide some bases for breeding Camellia oleifera cultivars with drought resistance, using two-year grafted seedlings of four main cultivars of C. oleifera at red-soil hilly areas as test materials, including ‘Huaxin’,‘Huashuo’,‘Changlin No.40’ and ‘Changlin No.4’, three treatments of severe drought stress, moderate drought stress and control were set by using potted controlling water method. Changes of 11 physiological and biochemical indexes of four cultivars of C. oleifera seedlings under different drought stress were obs...