Studies on floral traits and chemically induced male sterility in wheat (Triticum aestivum L. em. Thell)
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Date
2003
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Publisher
CCSHAU
Abstract
The present study was carried out with the objectives of screening wheat lines for
genetic variability in floral traits that influence allogamy and to study the effects of CHA on
different wheat varieties for induction of male and female sterility and its effects on
morphological traits.
Data was recorded on various traits and morphological traits. Analysis of variance
revealed that considerable amount of variability was present among different genotypes. The
phenotypic and genotypic coefficient of variation of anther extrusion (%) was relatively
greater than that for other characters and indicated the existence of greater amount of
variability among genotypes. Anther extrusion (%) showed maximum heritability and genetic
advance as percent of mean for all the traits studied. CH 9832 (1000ppm), although induced
higher level of male sterility (95.11-100%) but at the same time also affected female fertility
and exhibited a variation for female sterility (2.10-65.83%). CH 9832 was not found suitable
for HW 2016, WH 671 and PBW 373 because of its phytotoxic effects on female fertility.
Genotype WH 291 expressed maximum (24.95 %) out crossing. CHA spray resulted in
reduction in plant height, spike length, peduncle length and pollen viability%, in general.