isolated the
chemicals responsible for C. chinensis resistance
in seeds of TC1966 and named it vignatic acid. Its
major component is cyclopeptide alkaloids. These
cause plant breeders feeling skeptical about
employing the resistant gene from TC1966, and
thus makeV2709BG and V2802BG more suitable
sources for the resistance, since they had been
cultivated and consumed respectively in India and
the Philippines for a period of time without any
report of detrimental effects. Thus the factor(s)
responsible for resistance in seeds of V2709BG
and V2802BG is considered safe for human
consumption. Therefore, safety concern in utilizing
the two sources for developing resistant
varieties is void. Yet, a linkage drag of undesirable
traits will become less problem when the
resistant gene is transferred. Moreover, V2709BG
and V2802BG have a much higher yielding
potential and seed size than TC1966. Recently,
a high yielding mungbean variety with bruchid
resistance was developed and released to farmers
in Korea by using V2709 (V2709BG in this paper)
as the source of resistance (Lee et al. 2000).