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Rooting Systems of Soybeans. I. Differences in Root Morphology among Varieties 1
Author(s) -
Raper C. D.,
Barber S. A.
Publication year - 1970
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/agronj1970.00021962006200050009x
Subject(s) - taproot , biology , root system , intraspecific competition , agronomy , fibrous root system , competition (biology) , morphology (biology) , horticulture , botany , ecology , genetics
Field experiments were conducted to delineate morphological differences among root systems of 26 soybean varieties ( Glycine max (L) Merr.). ‘Aoda’ and ‘Harosoy 63,’ were selected from the 26 varieties and strains as representative of extremes in rooting patterns. A core sampling technique was used to quantitatively analyze the rooting systems in single‐plant plots. Harosoy 63 had a more extensive root system, including a nearly twofold greater root surface area, than Aoda. The rooting morphology in single‐plant and row plots was studied qualitatively by a soil monolith method. Both varieties lacked a distinctive taproot development below a zone of profuse branching. The disposition of primary branches in the soil was apparently influenced by intraspecific competition.