Yellow lupin (Lupinus luteus) tolerates waterlogging better than narrow-leafed lupin (L-angustifolius) -: I.: Shoot and root growth in a controlled environment

被引:30
作者
Davies, CL [1 ]
Turner, DW
Dracup, M
机构
[1] Univ Western Australia, Fac Agr, Nedlands, WA 6907, Australia
[2] Western Australia Dept Agr, Bentley, WA 6983, Australia
[3] Univ Western Australia, CRC Legumes Mediterranean Agr, Nedlands, WA 6907, Australia
来源
AUSTRALIAN JOURNAL OF AGRICULTURAL RESEARCH | 2000年 / 51卷 / 06期
关键词
hypocotyl; roots; shoots; duplex soil; legume; recovery;
D O I
10.1071/AR99073
中图分类号
S [农业科学];
学科分类号
09 ;
摘要
We studied the adaptation of narrow-leafed lupin (Lupinus angustifolius) and yellow lupin (L. luteus) to waterlogging because yellow lupin may have potential as a new legume crop for coarse-textured, acidic, waterlogging-prone areas in Western Australia. In a controlled environment, plants were waterlogged for 14 days at 28 or 56 days after sowing (DAS). Plants were more sensitive when waterlogged from 56 to 70 DAS than from 28 to 42 DAS, root growth was more sensitive than shoot growth, and leaf expansion was more sensitive than leaf dry weight accumulation. Waterlogging reduced the growth of narrow-leafed lupin (60-81%) more than that of yellow lupin (25-56%) and the response was more pronounced 2 weeks after waterlogging ceased than at the end of waterlogging. Waterlogging arrested net root growth in narrow-leafed lupin but not in yellow lupin, so that after 2 weeks of recovery the root dry weight of yellow lupin was the same as that of the control plants but in narrow-leafed lupin it was 62% less than the corresponding control plants. Both species produced equal amounts of hypocotyl root when waterlogged from 28 to 42 DAS but yellow lupin produced much greater amounts than narrow-leafed lupin when waterlogged from 56 to 70 DAS.
引用
收藏
页码:701 / 709
页数:9
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