Physiological characterization of 'stay green' mutants in durum wheat

被引:170
作者
Spano, G
Di Fonzo, N
Perrotta, C
Platani, C
Ronga, G
Lawlor, DW
Napier, JA
Shewry, PR
机构
[1] Expt Inst Crop Res, I-71100 Foggia, Italy
[2] Univ Bristol, Dept Agr Sci, Long Ashton Res Stn, Bristol BS41 9AF, Avon, England
[3] Univ Lecce, Dept Biol Sci, I-73100 Lecce, Italy
[4] Rothamsted Res, Harpenden AL5 2JQ, Herts, England
基金
英国生物技术与生命科学研究理事会;
关键词
photosynthesis; stay green; Triticum durum; yield;
D O I
10.1093/jxb/erg150
中图分类号
Q94 [植物学];
学科分类号
071001 ;
摘要
Four mutants with delayed leaf senescence were selected from seed of durum wheat mutagenized with ethylmethane sulphonate. Changes in net photosynthetic rate, efficiency of photosystem II and chlorophyll concentration during the maturation and senescence of the flag leaves of both mutant and parental plants were determined under glasshouse conditions. The four mutant lines maintained photosynthetic competence for longer than the parental line and are therefore functionally 'stay green'. The mutant lines also had higher seed weights and grain yields per plant than the parental line.
引用
收藏
页码:1415 / 1420
页数:6
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