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ISHS Acta Horticulturae 402: International Symposium on Cultivar Improvement of Horticultural Crops. Part 1: Vegetable Crops

PRELIMINARY STUDIES ON KIDNEY BEAN RUST RESISTANT BREEDING

Author:   Y. Bin
Keywords:   Kindey bean, Rust, Breeding, Disease resistance
Abstract:
Artificial crossing was made between resistant parents and non-resistant parents which had good horticultural properties. The final investigation of 5 crossing combinations indicate: The resistance to Kidney Bean Rust of F1: was dominant; 3 combinations' resistance was controlled by one pair of genes, F2 segregated with the ratio of 3:1 accounting to Resistant: Susceptible. In the other 2 combinations, F2 segregated with the ratio of 15:1 or 63:1 according to R:S, their resistance was controlled by two or three pairs of genes. The new resistance varieties "XinXiu 1" and "Xinxiu 2", from 80–4 × 30–7 combinations, showed vertically resistant. Varieties, 87–2–8–1, 87–1–33–2, 87–18–2–3,, selected form 80–4 x Youdoul2 combination, showed horizontally resistant. These new rust-resistant varieties (lines) increased production remarkably during the epidemic season of Kindey Bean Rust.
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