Phenotyping and genotyping for salt tolerance of KHARCHIA65 X HD2285 F2 population in wheat (Triticum aestivum L.em.Thell)
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Date
2014
Authors
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Journal ISSN
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Publisher
CCSHAU
Abstract
Experiments were conducted to validate markers (Nax1 and Nax2) for salinity tolerance and
phenotyping and genotyping of F
2 Population of cross Kharchia65x HD2285. Net house
evaluation data showed enormous variation among Kharchia65x HD2285F
2
plants including
plant height (cm), No. of tillers per plant, ear length (cm), No. of grains /ear, No. of
spikelets/spike, No. of grains/spikelet, grain yield per plant, 1000 grain weight (g), biological
yield/plant (g), harvest index (%) and germination percentage under salt stress condition. ).
90 plants were selected with high yield per plant and their tolerance to salt stress but only 20
plants were found to be Nax2 positive. All the 20 F
2 plants clustered in two major groups at
the similarity coefficient of 0.43. Major group 1 consisted of parent HD2285 while major
group II had Kharchia65 and all F
2
plants. This is the probably the first report where Nax2 has
been validated in Kharchia65 and it clearly indicates that a linked marker like Nax2 could
provide a valuable tool for breeding wheat with enhanced tolerance to salinity conditions.
Description
Keywords
Irrigation, Nitrogen, Planting, Sowing, Yields, Grain, Developmental stages, Crops, Biological development, Land resources