Comparison of Growth and Physiological Responses to Severe Drought between Two Altitudinal Hippophae rhamnoides Populations

CORC > 新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所 > 中国科学院新疆生态与地理研究所(2010年以前数据)

	Comparison of Growth and Physiological Responses to Severe Drought between Two Altitudinal Hippophae rhamnoides Populations
	Yang ; Yao ; Zhang ; Yongqing ; Yinan ; Xuejiang
刊名	SILVA FENNICA
	2010
卷号	44 期号:4 页码:603-614
关键词	WATER-USE EFFICIENCY CARBON-ISOTOPE DISCRIMINATION HERBACEOUS PLANTS OXIDATIVE STRESS BEECH ECOTYPES GAS-EXCHANGE MAIZE LEAVES FREE PROLINE LIGNIN ACCUMULATION
ISSN号	0037-5330
通讯作者	Yang, YQ, Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Peoples R China
中文摘要	Growth and physiological differences in response to drought were compared between two sea buckthorn (Hippophae rhamnoides L.) populations inhabited in the southeast of the Qinghai-Tibetan Plateau of China. The experimental design included two water regimes (100% and 25% of field capacity) and two populations from the low and high altitude zone. Our experiments were conducted in a naturally lit greenhouse under semi-controlled environmental conditions for a whole growing season in a dry valley (1800 m above the sea level). We found that drought tolerance is highly related to the plant antioxidant capacity and water use efficiency as well as leaf nutrient status in H. rhamnoides. The highland population (HP) experienced a greater inhibition in plant growth and leaf enlargement, lower leaf nitrogen and phosphorus content, lower root nodule biomass and root mass/foliage area ratio, and higher leaf water content loss paralleling with higher enhancement of abscisic acid level in response to drought, as compared with lowland population (LP). Additionally, reduction of leaf lignin content in HP further reduced its drought tolerance. On the contrary, LP showed effective adaptation strategies such as improvement of water economy and maintaining high ascorbic acid content. Therefore, we conclude that LP was more tolerant to drought than HP, and could be selected for reforestation in the dry valleys of upper Minjiang River regions in China.
学科主题	植物生理学
收录类别	SCI
公开日期	2011-08-19
内容类型	期刊论文
源URL	[http://ir.xjlas.org/handle/365004/9852]
专题	新疆生态与地理研究所_中国科学院新疆生态与地理研究所(2010年以前数据)
推荐引用方式 GB/T 7714	Yang,Yao,Zhang,et al. Comparison of Growth and Physiological Responses to Severe Drought between Two Altitudinal Hippophae rhamnoides Populations[J]. SILVA FENNICA,2010,44(4):603-614.
APA	Yang,Yao,Zhang,Yongqing,Yinan,&Xuejiang.(2010).Comparison of Growth and Physiological Responses to Severe Drought between Two Altitudinal Hippophae rhamnoides Populations.SILVA FENNICA,44(4),603-614.
MLA	Yang,et al."Comparison of Growth and Physiological Responses to Severe Drought between Two Altitudinal Hippophae rhamnoides Populations".SILVA FENNICA 44.4(2010):603-614.