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Registration of KS89WGRC9 Stress‐Tolerant Hard Red Winter Wheat Germplasm
Author(s) -
Sears R. G.,
Cox T. S.,
Paulsen G. M.
Publication year - 1992
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/cropsci1992.0011183x003200020062x
Subject(s) - germplasm , citation , biology , library science , horticulture , crop , computer science , agronomy
KS89WGRC9 (Reg. no. GP-333, PI 549277) is a stresstolerant hard red winter wheat (Triticum aestivum L.) germplasm line developed cooperatively by the Kansas Agric. Stn., the USDA-ARS, and the Wheat Genetics Resource Center, Kansas State Univ. It was released as germplasm in 1990. KS89WGRC9 is insensitive to endogenous levels of abscisic acid applied at either the seedling or adult stages. It has significantly lower stomatal resistance, higher leaf chlorophyll variable fluorescence, longer leaf area duration, and greater crop growth rate, grain filling rate, kernel weight, and grain yield than the parent line 'ND7532' under heat and drought stress (1). Hybrids from KS89WGRC9 are also significantly improved for the above traits compared with similar hybrids involving the parent line under stress conditions (2). KS89WGRC9 was tested under the experimental number KTC86211. It is a mutation line derived by selection at the cellular level for tolerance to 4 mg/L abscisic acid. Winter wheat strain ND7532 was the parent in the tissue culture selection program. KS89WGRC9 is similar in maturity, plant height, and yield to ND7532, a tall, late, winterhardy hard red winter wheat. They have identical gliadin protein patterns as determined by polyacrylamide gel electrophoresis. Small quantities of seed of KS89WGRC9 are available upon written request. Appropriate recognition of source should be given when this germplasm contributes to research or development of new cultivars. Seed stocks are maintained by the Wheat Genetics Resources Center, Dep. of Plant Pathology, Throckmorton Hall, Kansas State Univ., Manhattan, KS 66506.