Physiological characterization of 'stay green' mutants in durum wheat | Zendy

Giuseppe Spano | Zendy

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Physiological characterization of 'stay green' mutants in durum wheat

Author(s) -

Giuseppe Spano

Publication year - 2003

Publication title -

journal of experimental botany

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.616

H-Index - 242

eISSN - 1460-2431

pISSN - 0022-0957

DOI - 10.1093/jxb/erg150

Subject(s) - mutant , photosynthesis , senescence , chlorophyll , biology , photosystem ii , greenhouse , botany , horticulture , agronomy , microbiology and biotechnology , biochemistry , gene

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.

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