Cross compatibilities among orange-flesh sweet potato clones
1996
Novita, L. (Institut Pertanian Bogor (Indonesia). Fakultas Matematika dan Ilmu Pengetahuan Alam) | Hartana, A. | Suharsono
Orange-flesh sweet potato, that contains carotene and protein, is potentially useful for baby food and another food products. Sweet potato breeding program, to recombine several sweet potato clones in order to yield clones with higher carotene and protein, could be performed through artificial hybridization. Sterilities, cross-incompatibilities, as well as environmental conditions affected the success of seeds set percentage in sweet potato crosses. The objective of this study is to evaluate cross-compatibilities among some orange-flesh sweet potato clones, and to analyse the tuber quality of the progenies. Orange-flesh colour sweet potato clones used as the parents were: Joang, G-02, B-088, W-47,B-071, Ciceh-32, G-22, S-026, S-138, B-103, Penet, B-063, G-11, G-09, and Prambanan. Artificial crosses among clones were conducted in the green house. Hybrid seeds were sown, and after one month the seedlings were planted in the field. Tuber qualities were observed from single plant of each hybrid progeny . Flower initiation ranged from 64-120 days after planting. Penet was the earliest flowering, and B-071 was the latest. Ciceh-32 have the longest flowering periods and the highest number of flower production. B-071 and Penet have the shortest flowering periods and the lowest flower production. From 102 cross combination which were performed, 38 produced capsule with 617 seeds. However, only 454 progenies were able to be planted in the field and 304 of them produced tuber. Tuber weight range from 10-740 grams. Ciceh-32 and Joang produced more tubering progenies than the other clones if they were used as female parents. The main flesh tuber colour of the hybrids were yellow (58 percent) followed by orange (32 percent) and white (10 percent). Carotene contents of orange-flesh tuber were 1.3-11.7 mg/100 g (fresh weight basis), while their protein contents were 0.7-2.6 percent. No Correlation between carotene and protein content of tubers
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