Indian Society of Genetics & Plant Breeding

Effect of boron on pollen sterility in wheat (Triticum aestivum L.)

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From five hundred genotypes screened initially for boron
efficiency, six genotypes, namely, PBW 343, HD 2733, DBW
14, Schomburgk, WH 736 and Halna were serlected and
crossed in a half diallel fashion to obtain 15 F1s. The
parents and F1s were studied for different growth
components, yield and yield attributes under boron
deficient (B0 =0.5 ppm) and boron-supplemented (B1=1.5
ppm) condition (borax applied @ 20 kg/ha in soil) in a
randomized block design.Pollen sterility varied from 8.42%
(Schomburgk) to 30.04% (HD 2733) under Bo condition
whereas under B1 condition it varied from 2.57 % to 5.45%
for Schomburgk and HD 2733 respectively. Among the
crosses HD 2733 × DBW 14 (8.88%) followed by WH 736 ×
Schomburgk (8.92%) had significantly lower pollen sterility
% under B0 condition whereas under B1 condition, DBW
14 × Schomburgk (2.50%) and HD 2733 × DBW 14 (2.43%)
had lower percentage of pollen sterility. Schomburgk was
the most boron efficient genotype among parents in terms
of yield per plant while among the crosses WH 736 x
Schomburgk was the best. Predictability ratio was more
than o.5 for all the characters under both the conditions,
which indicates predominance of additive gene action.

Keywords: Wheat, genetic studies, boron deficiency, pollen sterility


Year: 2012
Volume: 72
Issue: 3
Article DOI: N/A
Print ISSN: 0019-5200
Online ISSN: 0975-6906



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