Hybrid necrosis and hybrid chlorosis in Indian varieties of Triticum dicoccum
Schubl. |
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| Authors: | M Kochumadhavan S M S Tomar P N N Nambisan S Ramanujam |
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| Institution: | (1) Indian Agricultural Research Institute, Regional Station, Wellington, Nilgiris, Tamilnadu, India;(2) Division of Genetics, IARI, 110012 New Delhi, India |
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| Abstract: | Summary Forty-four varieties of Triticum dicoccum ex India were crossed to two T. aestivum testers, namely, C 306 (Ne
1
ne
2
ch
1
Ch
2) and Sonalika (ne
1
Ne
2
ch
1
Ch
2), to determine their necrosis and chlorosis genes. Thirty-six (81%) varieties were found to be carriers of the Ch
1gene; the genotype of their necrosis gene (Ne
1or ne
1) could not be determined for want of suitable testers with the authors. Six varieties were found to be noncarriers for necrosis and chlorosis genes and two varieties were found to be carriers of the Ne
1gene and non-carriers for the chlorosis gene. Allelic variation at the Ch
2locus was observed; two alleles, Ch
2
s and Ch
2
m, are suggested. |
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| Keywords: | Triticum dicoccum emmer khapli wheat hybrid necrosis hybrid chlorosis hybrid weakness India |
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