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Improvement in flower structure and seed yield is one of the main objectives when developing cytoplasmic male sterile lines (CMS) in vegetable Brassicas for their successful use in the development of F1 hybrids. However, it is found that the introgression of alien cytoplasm alters the reproductive structure of Brassica oleracea genotypes and the altered floral structure in these lines can be improved...
Adaptation to higher temperature and humidity are typical characteristics of Indian cauliflower. The typical Indian cauliflowers have been used worldwide in developing cultivars with tolerance to higher temperature. Present day cultivated types of Indian cauliflowers posses other desirable traits like white and compact curd with semi-erect plant types like the European snowball types. However, there...
The Brassica vegetable crops are rich source of important antioxidant compounds having anticancer and health promoting properties. Development of F1 hybrids with better nutritional traits is one of the main breeding objectives in different vegetable crops. Our study is the first report of determining heterotic combinations utilizing cytoplasmic male sterile (CMS) and doubled haploid (DH) inbred lines...
The Brassicas are affected by several diseases, of which black rot, Xanthomonas campestris pv. campestris (Pam.) Dowson (Xcc), is one of the most widespread and devastating worldwide. The black rot bacteria causes systemic infection in the susceptible plants and penetrate the plants through the hydathodes or wounds. Typical disease symptoms are ‘V’ shaped necrotic lesions appearing from the leaf margins...
Indian cauliflower (Brassica oleracea var. botrytis L.; C genome) is highly susceptible to black rot caused by Xanthomonas campestris pv. campestris (Pam.) Dowson. Till now no durable resistance genes have been identified in C genome of Brassica. Two B. carinata genotypes, NPC-9 and HCA-6 were found highly resistant to Xcc race 1 and 4, most prevalent throughout the world. Inter-specific hybridization...
This study is the first report of combining ability and heterosis for important vitamins and antioxidant plant pigments in cauliflower. Five CMS lines were crossed with 8 male fertile lines in line × tester design to develop 40 hybrids. These hybrids along with parental lines were evaluated for different vitamins and anti-oxidant pigments to reveal extent of heterosis and genetic combining ability...
Three CMS lines, Ogu1A, Ogu2A and Ogu3A were selected among ten lines after BC7 based on superior commercial, floral and seed setting traits. Introgression of sterile Ogura cytoplasm in cauliflower nuclear background reduced the flower size but did not affect commercial and seed setting traits drastically. Line × Tester analysis was done by taking these three CMS lines free from floral deformities...
This study was the only report for exploiting gynoecy for studying combining ability and hybrid development in bitter gourd. Thirty-six F1 hybrids and nine inbred lines including one gynoecious line were used to assess combining ability for earliness and yield in bitter gourd Momordica charantia L.). Among parents, gynoecious parent; DBGy-201 showed maximum GCA effect in desirable direction for node...
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