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Registration of Four Germplasm Lines of Cicer Milkvetch
Author(s) -
Townsend C.E.
Publication year - 1990
Publication title -
crop science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.76
H-Index - 147
eISSN - 1435-0653
pISSN - 0011-183X
DOI - 10.2135/cropsci1990.0011183x003000020052x
Subject(s) - townsend , germplasm , citation , center (category theory) , library science , biology , crop , horticulture , computer science , physics , agronomy , chemistry , quantum mechanics , crystallography
US-432 COWPEA (southernpea), Vigna unguiculata (L.) Walp., germplasm (Reg. no. GP-83, PI 535810) was released by the USDA-ARS in 1988. US-432 is a cream-type cowpea; it was derived from a single plant selected in 1980 from an 'Elite' (Bowers and Sistrunk, 1978) population exhibiting obvious segregation for a number of important characteristics. US-432 has most of the desirable horticultural characteristics considered essential for a modern cowpea cultivar developed for use as a processing vegetable crop. Maturity is early and the plants have an upright, bushy growth habit with a heavy yield of long, straight pods borne in a scattered fashion at foliage level. Pod color is green when immature, yellow at green-shell maturity, and light straw when dry. The peas are medium in size, kidney shaped, and cream colored. The dry seed coat is wrinkled. Results of a taste panel evaluation of canned and frozen samples of fresh peas indicate that the processing quality of US-432 is good. US-432 is superior to Elite in several respects: the plant habit is shorter and more compact, the yield is more concentrated, the yield potential is greater, and the maturity date is earlier. US-432 was tested throughout the southern USA as an observational entry in the 1984 Regional Southernpea Cooperative Trials and as a replicated entry in the 1985 trials. The line was not released as cultivar because of identified disease susceptibilities. Like many horticultural cowpea cultivars, US-432 is susceptible to root knot nematode (Meloidogyne spp.), Fusarium wilt [Fusarium oxysporum Schlecht. f. sp. tracheiphilum (E. F. Sm.) Snyd. & Hans.], and rust [Uromyces phaseoli (Reben.) Wint. var. vignae (Barcl.) Arth.]. US-432 is recommended for use as a parent in breeding programs with an objective to generate cultivars suitable for high plant population (narrow row) culture. US-432 has many of the attributes, e.g., compact plant habit and concentrated yield, needed in such a cultivar. Additionally, US432 is recommended for use as an experimental line in studies designed to evaluate various types of high plant population production systems. Small quantities of US-432 breeder seed can be obtained from the corresponding author.