RESPONSE OF CASSAVA TO WATER-STRESS
RESPONSE OF CASSAVA TO WATER-STRESS
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DOI：
10.1007/bf02370950
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发表时间：
1987-01-01
期刊：
影响因子：
4.9
通讯作者：
COCK, JH
中科院分区：
文献类型：
--
作者：
ELSHARKAWY, MA;COCK, JH
木薯是热带地区很大一部分人口的主食。它被小农户广泛生产，用于其淀粉根，在贫瘠的土壤上，几乎没有投入。它在有利条件下高产，在其他作物歉收的不利条件下产量相当好。这种作物一旦生长，在没有雨水的情况下可以存活几个月。木薯种质对长期干旱的耐受性有很大的差异，确实存在在有利和不利条件下选育稳定和相对高产的可能性。CIAT对几个木薯无性系的研究表明，中期胁迫下的高产与非胁迫条件下的高产并不是不相容的。在两种条件下都具有高产潜力的植株类型(如杂交种CM507-37)的特点是在非胁迫条件下略高于最适叶面积指数，较高的叶面积比，更密集和更广泛的细根系统。
Cassava (Manihot esculentaCrantz) is a staple food for a large sector of human population in the tropics. It is widely produced for its starchy roots by small farmers over a range of environments on poor infertile soils with virtually no inputs. It is highly productive under favorable conditions and produces reasonably well under adverse conditions where other crops fail. The crop, once established, cansurvive for several months without rain. There is a wide variation within the cassava germplasm for tolerance to prolonged drought and the possibility to breed and select for stable and relative high yields under favorable and adverse conditions does indeed exist. Research with several cassava clones at CIAT has shown that high root yield under mid—term stress is not incompatible with high yield under nonstress conditions. Plant types with high yield potential under both conditions (e.g.the hybrid CM 507-37) are characterized by having slightly higher than optimum leaf area index under nonstress conditions, higher leaf area ratio and more intensive and extensive fine root system.