Year: 2016 | Month: August | Volume 9 | Issue 4
Genetics of marker assisted backcross progenies of the cross HUR-105 X Swarna-SUB1
Abstract:
The Marker Assisted backcross progenies of the cross HUR-105 x Swarna-Sub1 along with their parental lines were evaluated under submergence condition for 14 days at 35 days after sowing. Total 53 BC2F1 progenies were subjected to complete submergence out of which twenty lines recovered after desubmergence. The survival percentages of BC2F1 plants was observed to be 47.62 per cent. Mean performance for BC2F1 generation in submerged condition was found lower for most of the yield traits viz., productive tiller per plants, length of panicle, weight of panicle, spikelet per panicle, test weight, yield per plant, in comparison to all six generations in normal irrigated condition. Amylose content and gel consistency was found comparable to normal irrigated condition for segregating generations. Under submerged condition BC2F1 generation showed reduced height and medium to late maturity. The yield of the BC2F1 plants under submergence varied from 4.64 g to 14.32 g per plant. On the basis of field test under submergence condition the four lines namely HUR-105-Sub1-6, HUR-105-Sub1-23, HUR-105-Sub1-25 and HUR-105-Sub1-28 were found better in respect to grain yield and other related traits. The level of submergence tolerance in backcross progenies were similar as tolerant parent Swarna Sub-1, revealed that submergence tolerance in HUR 105-Sub-1 is governed by single dominant gene.
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