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Test Weight in Relation to the Physical and Quality Characteristics of Soft Winter Wheat ( Triticum aestivum L. em Thell) 1
Author(s) -
Ghaderi Ardeshir,
Everson E. H.,
Yamazaki W. T.
Publication year - 1971
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/cropsci1971.0011183x001100040015x
Subject(s) - test weight , kernel (algebra) , volume (thermodynamics) , mathematics , cultivar , container (type theory) , yield (engineering) , grain yield , biology , horticulture , agronomy , botany , materials science , combinatorics , physics , composite material , quantum mechanics
Test weight is defined as the weight of grain that fills a given volume. It is the product of kernel density and volume of grain occupying the container. The latter component, when expressed as percentage of the volume of the container, is referred to as packing efficiency and was shown to be a cultivar characteristic. Of the two components packing efficiency has a greater effect on test weight when comparing soft winter wheats ( Triticum aestivum L. em Thell). There was a negative correlation between test weight and the kernel length‐width ratio (kernel shape). When the length‐width ratio remained constant, there was no increase in test weight when kernel volume increased. Kernel width was correlated more than length with kernel volume. Test weight and flour yield were not correlated within or among cultivars. Kernel protein was related to kernel size within cultivars.