Clone x Tester Crosses on Compatibility Level of Sweetpotato (Ipomoea batatas L.)
Febria C. Indriani
Indonesian Legumes and Tuber Crops Research Institute (ILETRI), Jl. Raya Kendalpayak Km.8, P.O.Box 66 Malang 65101, East Java, Indonesia.
Joko Restuono
Indonesian Legumes and Tuber Crops Research Institute (ILETRI), Jl. Raya Kendalpayak Km.8, P.O.Box 66 Malang 65101, East Java, Indonesia.
Wiwit Rahajeng
Indonesian Legumes and Tuber Crops Research Institute (ILETRI), Jl. Raya Kendalpayak Km.8, P.O.Box 66 Malang 65101, East Java, Indonesia.
Rudi Iswanto
Indonesian Legumes and Tuber Crops Research Institute (ILETRI), Jl. Raya Kendalpayak Km.8, P.O.Box 66 Malang 65101, East Java, Indonesia.
Titik Sundari
Indonesian Legumes and Tuber Crops Research Institute (ILETRI), Jl. Raya Kendalpayak Km.8, P.O.Box 66 Malang 65101, East Java, Indonesia.
Rudy Soehendi
Indonesian Legumes and Tuber Crops Research Institute (ILETRI), Jl. Raya Kendalpayak Km.8, P.O.Box 66 Malang 65101, East Java, Indonesia.
Didik Harnowo
Indonesian Legumes and Tuber Crops Research Institute (ILETRI), Jl. Raya Kendalpayak Km.8, P.O.Box 66 Malang 65101, East Java, Indonesia.
Yuliantoro Baliadi
Indonesian Legumes and Tuber Crops Research Institute (ILETRI), Jl. Raya Kendalpayak Km.8, P.O.Box 66 Malang 65101, East Java, Indonesia.
Made J. Mejaya *
Indonesian Legumes and Tuber Crops Research Institute (ILETRI), Jl. Raya Kendalpayak Km.8, P.O.Box 66 Malang 65101, East Java, Indonesia.
*Author to whom correspondence should be addressed.
Abstract
Evaluation of compatibility on sweetpotato is very important to determine the crossing parents to increase the compatibility of controlled cross-pollination. This research was aimed to study the level of compatibility in controlled cross-pollination based on percentage of normal seedlings obtained from crosses. The research was conducted at Kendalpayak Experimental Station of ILETRI, Malang, Indonesia then followed by breaking seed dormancy and germination of seeds obtained. The genetic materials used were 17 accessions with high yielding potential and 3 accessions as tester for crossing. The results showed that there were differences in the compatibility levels of crossing combination and their compatibilities as male or female parents. Clone C-011 (Tester 2) was the most compatible as male parent, while clone C-141, C-007 and C-131 were the most compatible as female parents. Clone C-127 (Tester 3) was the most compatible as both male and female parents. Clone C-001 (Tester 1) could not be used as female parent due to high incompatibility.This compatible clone information is very useful in determining of both controlled crosses and open crosses in sweet potato in order to increase the breeding efficiency.
Keywords: Compatibility, crossing, seedlings, sweetpotato, tester