In vitro hardening -: the role of supra-optimal sucrose on acclimation stress in Kniphofia leucocephala

被引：0
|
作者：
McCartan, SA [1 ]
Beckett, RP [1 ]
van Staden, J [1 ]
机构：
[1] Univ KwaZulu Natal, Sch Bot & Zool, Res Ctr Plant Growth & Dev, ZA-3209 Scottsville, South Africa
来源：
SOUTH AFRICAN JOURNAL OF BOTANY | 2005年 / 71卷 / 01期
基金：
新加坡国家研究基金会;
关键词：
D O I：
10.1016/S0254-6299(15)30158-7
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Supra-optimal sucrose concentrations (6% and 9%) in vitro resulted in morphological and ultrastructural differences between control and stressed plantlets of Kniphofia leucocephala. Shoot length, in particular, was significantly reduced by increasing sucrose concentrations. Supra-optimal sucrose concentrations did not confer significant benefits on the stressed plantlets after transplanting, indicated by the similar maximum photochemical efficiency of photosystem A. However, environmental stresses ex vitro may not have been sufficiently great to elicit different responses from the control and stressed plantlets.
引用
收藏
页码：107 / 109
页数：3
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