Indian Society of Genetics & Plant Breeding


Chemical hybridising agents V#: Evaluation of acylanilines in normal and late sown bread wheat (Triticum aestivum L.)

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There is an urgent need for the introduction of hybrid
wheat in India to meet the projected target of production
of wheat i.e., 105 m. tonnes by 2020 A.D. In the absence
of cytoplasmic-genetic male sterile (CGMS) system, use
of chemical hybridising agents (CHAs) Is another possibility
already successful in some western countries. Keeping
this approach in view, a total of 19 test CHAs comprising
of 10 oxanilates, 5 acetoacetanilides and 4 malonanilates
were synthesised and screened as CHAs on two genotypes
of wheat (PBW 343 and HD 2687) at premeiotic stage and
at different concentrations (1000-4000 ppm). The field trial
was conducted following randomised block design (RBD)
with three replicates. Fluoroanalogues (1, 5 and 10) gave
the best performance in inducing male sterility in both
the varieties. At 3000 ppm, they respectively Induced 100,
90.33 and 88.54 per cent male sterility on HD 2687 (late
sown). Similar trend of results was obtained on these
cultivars sown at normal sowing dates. No other
substituent could match fluoro in enhancing the property
of male sterility induction. Neither modification of the side
chain nor change in substituent position in the phenyl
ring could improve the observed induction of male sterility.

Keywords: Wheat, male sterility, anilates, acetoacetanilides, CHA


Year: 2001
Volume: 61
Issue: 3
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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