IMPROVEMENT IN CHINA ASTER [CALLISTEPHUS CHINENSIS (L.) NEES] THROUGH HYBRIDIZATION AND MUTATION
Loading...
Date
2018
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Division of Floriculture and Medicinal Crops ICAR-Indian Institute of Horticultural Research Hesaraghatta Lake Post, Bengaluru-
Abstract
The present investigation was undertaken on “Improvement in China aster [Callistephus chinensis (L.) Nees.] through hybridization and mutation” at ICAR- Indian Institute of Horticultural Research, Hesaraghatta Lake Post, Bengaluru during 2015-17. The objectives of the investigation was to study the crossability in China aster genotypes, to evaluate F1 hybrids for desirable traits, to investigate pigments in F1 hybrids and their parents and to study the induction of mutagenesis in China aster genotypes through gamma irradiation.
China aster belongs to the family Asteraceae and is native to China. It is commercially grown for cut flower, loose flower, bedding plant, for flower decoration, for preparation of garlands and bouquets. Hybridization was carried out in Line x Tester fashion with five lines viz., Arka Kamini, Arka Poornima, Arka Aadya, Arka Archana and Arka Violet Cushion and three tester lines viz., Arka Shashank, Local Violet and Local Pink. Results revealed that the number of days taken for seed maturity ranged from 31.33 (Arka Archana x Local Pink) to 39.83 (Arka Poornima x Arka Shashank). Average 100 seeds weight was ranged from 0.21 g (Arka Kamini, Arka Aadya and Local Violet) to 0.32 g (Arka Shashank).
Among 15 F1 hybrids with their parents evaluated for flower quality and yield traits, Arka Aadya x Local Violet was found best with highest number of leaves/plant (312.47), number of branches/plant (23.19), number of flowers per plant (93.66), highest weight of flowers/plant (293.87 g) and flower yield per hectare (24.68 tonne). The growth pattern, flower form and flower colour in F1 hybrids were studied. Both spreading and semi-erect plant type were found to be dominant over erect type. Pompon flower form was completely dominant over powderpuff. The violet colour was dominant over pink and white.
Significant heterosis over commercial check cv. Arka Kamini was obtained for all the traits including total monomeric anthocyanins and total flavonoids, except flower head diameter, vase life and shelf life.
Description
t-9888
Keywords
null