tailieunhanh - Interspecific hybridization in genus Abelmoschus medikus

Interspecific hybridization in okra is of immense value to exploit the diversity of species in the genus Abelmsochus for developing male sterile lines and/or advance breeding lines possessing resistance to YVMV and ELCV diseases. The present investigation was carried out during the year 2015-16 to study the pattern of interspecific hybridization in genus Ablemoschus involving ten wild species viz., A. angulosus var. angulosus, A. angulosus var. grandiflorus, A. caillei, A. ficulneus, A. manihot ssp. tetraphyllus, A. moschatus, A. tetraphyllus var. pungense, A. tetraphyllus var. tetraphyllus, A. tuberculatus and new taxa IC 0433556 with eight genotypes of cultivated species (Abelmoschus esculentus). Hand pollination was undertaken; fruit set, seed set, seed germination and pollen viability per cent were calculated. From the present investigation, it was found that the cultivated A. esculentus genotypes were compatible as male parents with A. caillei, A. manihot ssp. tetraphyllus and A. tetraphyllus var. tetraphyllus, A. tuberculatus. Interestingly, there was no compatibility when A. tetraphyllus var. pungense and new taxa IC 0433556 crossed with cultivated okra genotypes (IIHR-285 and 10-11-594). However, there was limited fruit set observed in A. angulosus var. angulosus, A. angulosus var. grandiflorus, A. moschatus and A. ficulneus. | EXCELLENT PUBLISHERS International Journal of Current Microbiology and Applied Sciences ISSN 2319-7706 Volume 8 Number 08 2019 Journal homepage http Original Research Article https Interspecific Hybridization in Genus Abelmoschus Medikus Kattula Nagaraju1 M. Pitchaimuthu1 . Sadashiva1 . Rao A. Rekha3 and R. Venugopalan2 J division of Vegetable Crops ICAR- IIHR Bengaluru Karnataka-560089 India 2Statistics Lab ICAR-IIHR Bengaluru Karnataka-560089 India 3Cytology Lab Division of Fruit Crops ICAR- IIHR Karnataka-560089 India Corresponding author ABSTRACT Keywords Abelmoschus Okra Interspecific hybridization Wild species Crossability seed set Fruit set Pollen viability Article Info Accepted 04 July 2019 Available Online 10 August 2019 Interspecific hybridization in okra is of immense value to exploit the diversity of species in the genus Abelmsochus for developing male sterile lines and or advance breeding lines possessing resistance to YVMV and ELCV diseases. The present investigation was carried out during the year 2015-16 to study the pattern of interspecific hybridization in genus Ablemoschus involving ten wild species viz. A. angulosus var. angulosus A. angulosus var. grandiflorus A. caillei A. ficulneus A. manihot ssp. tetraphyllus A. moschatus A. tetraphyllus var. pungense A. tetraphyllus var. tetraphyllus A. tuberculatus and new taxa IC 0433556 with eight genotypes of cultivated species Abelmoschus esculentus . Hand pollination was undertaken fruit set seed set seed germination and pollen viability per cent were calculated. From the present investigation it was found that the cultivated A. esculentus genotypes were compatible as male parents with A. caillei A. manihot ssp. tetraphyllus and A. tetraphyllus var. tetraphyllus A. tuberculatus. Interestingly there was no compatibility when A. tetraphyllus var. pungense and new taxa IC 0433556 crossed with cultivated okra genotypes IIHR-285 and 10-11-594 . .