摘要
采用盆栽控水法研究干旱胁迫对6份沿阶草(Ophiopogon japonicus)种质(宝鸡1号、宝鸡2号、北京、天水、渠县1号、渠县2号)的叶片相对含水量、丙二醛含量及游离脯氨酸等5个生理指标的影响并综合评价其抗旱能力。结果表明,随着干旱胁迫时间的增加,宝鸡1号与北京的生长在胁迫后期受到抑制,可溶性蛋白含量和丙二醛含量增幅均较小;叶片相对含水量下降最快的为宝鸡2号,由73.3%下降至58.1%。6份沿阶草种质的游离脯氨酸含量呈上升趋势,而超氧化物歧化酶活性则呈现先上升后下降的趋势。综合评价其抗旱能力依次为宝鸡1号>北京>天水>渠县1号>渠县2号>宝鸡2号。
A pot experiment was carried out to determine the effect of drought stress on physiological indexes of six different Ophiopogon japonicas gerplasms （Baoji No. 1, Baoji No.2, Beijing, Tianshui, Quxian No.1, Qux- ian No.2） by measuring relative water content of leaves, MDA （Malondialdehyde） content, free proline accu- mulation, and to comprehensively evaluate the drought resistance of six gerplasms. The results showed that Baoji No.1 and Beijing growth were inhibited with the period extension of drought stress, and the MDA content and the soluble protein content increased slightly. The leaf relative water content of Baoji No.2 sharply de- creased from 73.3% to 58.1 %. And the free proine accumulation increased, while SOD activity increased at first then decreased as the period of drought stress increased of six O. japonicas gerplasms. Drought resistance of six O. japonicus germplasms were in following order as Baoji No.1〉 Beijing〉 Tianshui 〉 Quxian No. 1〉 Quxian No.2 〉 Baoji No.2.
出处
《草业科学》
CAS
CSCD
北大核心
2016年第2期184-191,共8页
Pratacultural Science
基金
宁夏农业育种专项"牧草种质资源创新与新品种创制"(2014NXYZ040203)
作者简介
梁丹妮（1991-），女，陕西榆林人，在读硕士生，主要从事草坪建植与管理方面的研究。E-mail：liangdn0711@163．com
通信作者：兰剑（1970-），男，四川邻水人，教授，博士，主要从事草坪建植与管理方面的研究。Email：lanjian@nxu．edu．cn
