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Crossability and hybrid necrosis in reciprocal crosses of Triticum aestivum with Triticum turidum

Crossability and hybrid necrosis in reciprocal crosses of Triticum aestivum with Triticum turidum

Crop Improvement 24(2): 219-225

The extent of cross-compatibility to set sufficient seed and occurrence of hybrid necrosis is a major barrier in transferring the economically important traits of the desirable Triticum aestivum genotypes into T. turgidum and vice versa. The aim of the present study was to know the extent of crossability and hybrid necrosis in the F1s of the reciprocal crosses of bread wheats, viz. VL 421, VL 616, HD 2380, HS 207 and Sonalika with durums. DWL 5023, DWL 5046. and WL 1002. The crossability was generally higher in durum wheat X bread wheat crosses than in the reciprocals. VL 616 and DWL 5046 were found to be the most crossable. However, the field emergence of hybrid seeds was higher when T. aestivum was used as female parent. Bread wheat cultivars VL 616, HD 2380, HS 207 and Sonalika were inferred to carry Ne2 gene whereas all the durums carried Ne1 gene. The bread wheat cultivar VL 421 was inferred to be either free from the dominant necrotic gene, or, if present, is suppressed by some unidentified gene(s) present on the D-genome chromosome(s).

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Accession: 008399935

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