Indian Society of Genetics & Plant Breeding

SELECTION FOR QUALITY IN EARLY GENERATION BASED ON THE HMW SUBUNITS OF GLUTENIN IN BREADWHEAT

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The D genome encoded high molecular weight (HMW) subunits of glutenin 5 + 10 (Glu-l
score 4) from high grain-protein stock TW·l and cv. Shera were transferred to cv. Kalyan
Sona with allelic subunits 2 + 12 (Glu-l score 2) using backcrosses. Selections in the BC2Fs
and BCtFs generations, homozygous for HMW subunits 5 + 10 or 2 + 12 were analysed for
SDS sedimentation volume. Family means of selections carrying subunits 5 + 10 showed
higher sedimentation volume than those with subunits 2 + 12. Thirteen selections were
numerically superior to the recurrent parent Kalyan Sona in sedimentation volume, 12 of
these carried subunits 5 + 10. These selections resembled Kalyan Sona in the A and B
genome coded HMW subunits ofglutenin,grain proteincontent, grain yield and plant type.
Transfer of desirable HMW subunits of glutenin for modifying Glu·l score and quality of
cultivars using backcrossing and SDS-PAGE of half grains is demonstrated.
 

Keywords: Triticum aestiuum, wheat, glutenin, 50S-sedimentation test, 50S-polyacrylamide gel electrophoresis, quality.

Info

Year: 1993
Volume: 53
Issue: 2
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906

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