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Delineation of Inheritance Pattern of Aleurone Layer Colour Through Chemical Tests in Rice
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Delineation of Inheritance Pattern of Aleurone Layer Colour Through Chemical Tests in Rice
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Journal Article
Delineation of Inheritance Pattern of Aleurone Layer Colour Through Chemical Tests in Rice
2017
Overview
Background
Rice aleurone layer develops different colours with various chemical tests that may help to develop some rapid tests for identification/grouping of rice varieties. Understanding the colour inheritance pattern could enable to develop chemical clues that may help for genetic purity analysis along with grow-out-test.
Results
In this study, inheritance pattern of aleurone layer colour was studied in parents, F
1
and F
2
progenies derived from the crosses IR 36
×
Acc. No. 2693 and IR 64
×
Acc. No. 2693. The parent IR 36 showed light yellow (NaOH/KOH) and brown (phenol/modified phenol test) colour; whereas, Acc. No. 2693 revealed wine red/dark wine red (NaOH/KOH) and light brown colour/no reaction (phenol/modified phenol test). In contrary, another parent IR 64 exhibited light yellow (KOH/NaOH) and dark brown (phenol, modified phenol) colour. Both the F
1
showed an intermediate light wine red colour (NaOH/KOH) and dark brown (phenol and modified phenol) colour, which is dominant over their one of the parents. The colour pattern with standard phenol/modified phenol, NaOH and KOH tests in F
2
progenies of both the crosses showed 9:7 (complementary gene interaction) and 11:5 ratios (reciprocal dominance modification of recessive alleles), respectively.
Conclusions
Our findings clearly elucidate the colour inheritance pattern in rice that may facilitate to develop rapid chemical tests to identify/ group the varieties for genetic purity analysis.
