CHARACTERIZATION OF A WILTY SUNFLOWER (HELIANTHUS-ANNUUS L) MUTANT .1. ABSCISIC-ACID CONTENT, LIGHT-DARK CHANGES IN THE STOMATAL CONDUCTANCE AND GENETIC-ANALYSIS

被引：13

作者：

PUGLIESI, C ^{[1
]}

FAMBRINI, M ^{[1
]}

VERNIERI, P ^{[1
]}

BARONCELLI, S ^{[1
]}

机构：

[1] DIPARTIMENTO BIOL PIANTE AGR, SEZ ORTICOLTURA & FLORICOLTURA, I-56124 PISA, ITALY

来源：

JOURNAL OF EXPERIMENTAL BOTANY | 1994年 / 45卷 / 274期

关键词：

ABA; HELIANTHUS ANNUUS L; STOMATAL CONDUCTANCE; WILTY MUTANT;

D O I：

10.1093/jxb/45.5.533

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The present study was conducted to characterize genetically and physiologically a spontaneous mutation in sunflower which confers a wilty phenotype. The wilting condition of the mutant is due to abnormal stomatal behaviour. The mutant stomata resist closure in darkness. This abnormality is associated with low levels of endogenous abscisic acid (ABA). By artificially elevating the ABA content of the mutant plants by spray treatments with 10(-4) and 10(-5) M solutions it proved possible to effect a phenotypic reversion of the mutant. It has, therefore, been proposed that the primary effect of this spontaneous mutation is to reduce the level of ABA. The genetic analysis has shown that the wilty phenotype is due to recessive nuclear mutation at a single locus.

引用

页码：533 / 538

页数：6

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