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Effects of Seed Size on Seedling Performance in Soybeans. I. Seedling Growth and Respiration in the Dark 1
Author(s) -
Burris J. S.,
Wahab A. H.,
Edje O. 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/cropsci1971.0011183x001100040009x
Subject(s) - seedling , biology , shoot , respiration , dry matter , dry weight , growth rate , cultivar , embryo , relative growth rate , agronomy , horticulture , respiration rate , botany , geometry , mathematics , microbiology and biotechnology
Growth and respiratory rates were compared in four cultivars and in four seed sizes of soybeans. The larger seed produced larger embryos, although the relative rate of dry matter accumulation did not vary appreciably. The percentage of cotyledonary dry weight loss was inversely related to seed size. However, the ratio of embryo growth to cotyledonary loss was not significantly different between sizes. The large seed exhibited a higher respiratory rate both in the cotyledons and in the root‐shoot axis, although these differences were not obvious until after 3 days of growth. Total embryo length at 7 days was optimum at an intermediate size, while the shoot growth increased with decreasing size at the expense of radical growth.