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Relationships among Maximum Hypocotyl Length, Seed Weight, and Emergence in Sericea Lespedeza
Author(s) -
Qui J.,
Mosjidis J. A.
Publication year - 1993
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1993.00021962008500050007x
Subject(s) - lespedeza , hypocotyl , biology , agronomy , sowing , seedling , selection (genetic algorithm) , horticulture , computer science , artificial intelligence
Poor seedling emergence is a major limitation in establishing sericea lespedeza [ Lespedeza cuneata (Dumont de Courset) G. Don]. A series of controlled‐environment and field experiments were conducted to determine relationships among maximum hypocotyl length (MHL), seed weight, and percentage and rate of emergence in sericea lespedeza and to define criteria for selecting sericea lespedeza with good field emergence. The best time to distinguish MHL among sericea lespedeza genotypes was 9 d after emergence at alternating temperature of 26/22 °C (13/11 h). Seed weight and MHL were positively correlated, and both were positively correlated with field emergence. Selection for heavier‐seeded genotypes, which should tend to increase MHL, is easy. However, direct selection for greater MHL is required if the advantages of MHL especially when planting deep, are to be fully exploited.