ABSTRACT

Tomato interspecific crossing programme was studied with two Indian tomato (L. esculentum) cultivars and six accessions of L. peruvianum. In reciprocal crosses an unilateral incompatibility was observed especially when L. peruvianum used as a maternal parent. While unilateral compatibility was noticed in crosses involved L. esculentum as a maternal parent with more than 50% crossing index coupled with normal fruit development. However, abnormal seed development was resulted with immature seeds due to post zygotic sterility. Between two tomato cultivars, cv. Dhanashree recorded higher crossing index (53.52%) than the cv. 85-1 (50.15%). While among the six accessions of L. peruvianum, the highest crossing index (55 –57.28 %) was recorded by EC 106294 while the lowest (46-46.67 %) by EC 486. Keywords: Interspecific hybridization, unilateral incompatibility, biotic stresses, prezygotic sterility, unilateral compatibility

https://ijbpas.com/pdf/2019/May/MS_IJBPAS_2019_4720.pdf

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https://doi.org/10.31032/IJBPAS/2019/8.5.4720