Research Notes : Relationship between photoperiod, temperature, solar radiation and grain yield in soybean

Date
1982-04-01
Authors
Shanmugasundaram, S.
Yen, Chung-Ruey
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Iowa State University Digital Repository
Abstract

Photoperiod and temperature influence the growth, development and area of adaptation of soybean cultivars (Shanmugasundaram, 1981). Germplasm collected from the U.S. Maturity Groups 00 to X were screened for photoperiodic response and were classified into 10 different photoperiod sensitivity score groups, based on flowering in 10 and 16 hr photoperiods (Shanmugasundaram, 1981). By utilizing 0 sensitivity score types as one parent, high yielding selections with different levels of photoperiod sensitivity have been developed.

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