What question did this study set out to answer?

To determine how different combinations of maturity alleles influence the duration of photoperiod-sensitive and insensitive developmental phases preceding flowering in soybean.

July 1, 1994Annals of Botany

Variation in the Durations of the Photoperiod-sensitive and Photoperiod-insensitive Phases of Development to Flowering Among Eight Maturity Isolines of Soyabean [Glycine max (L.) Merrill]

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Authors

AUAnubha UpadhyayJawaharlal Nehru Krishi Vishwa Vidyalaya RSR. H. SummerfieldUniversity of Reading RER. H. EllisUniversity of Reading

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Implication

Experimental study reveals maturity alleles prolong inductive and insensitive developmental phases in soybean isolines, highlighting dual genetic mechanisms behind flowering time.

Key Points

To determine how different combinations of maturity alleles influence the duration of photoperiod-sensitive and insensitive developmental phases preceding flowering in soybean.
Conducted a reciprocal-transfer experiment at a constant mean temperature of 25 °C, transferring plant cohorts between short (11.5 h d⁻¹) and long photoperiods.
Assessed eight isolines representing different combinations of three pairs of maturity alleles (E1/e1, E2/e2, E3/e3) across pre-inductive, inductive, and post-inductive phases.
Maturity gene combinations exhibited their greatest impact during the inductive phase in long days, extending its duration from 27 d to 54 d with increasing photoperiod sensitivity.
Under short days (11.5 h d⁻¹), the inductive phase required 11 cycles in less sensitive genotypes versus 7 cycles in more sensitive genotypes.
Maturity alleles also prolonged the photoperiod-insensitive phases, varying the pre-inductive phase from 3 to 11 d and the post-inductive phase from 13 to 18 d, resulting in total time to flower of 28 to 34 d under inductive regimes.

Cite This Study

Upadhyay et al. (1994) studied this question.

synapsesocial.com/papers/6ab380f604d62d6b03d62386 https://doi.org/10.1093/aob/74.1.97

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Implication

Experimental study reveals maturity alleles prolong inductive and insensitive developmental phases in soybean isolines, highlighting dual genetic mechanisms behind flowering time.

Variation in the Durations of the Photoperiod-sensitive and Photoperiod-insensitive Phases of Development to Flowering Among Eight Maturity Isolines of Soyabean [Glycine max (L.) Merrill]

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Cite This Study

Variation in the Durations of the Photoperiod-sensitive and Photoperiod-insensitive Phases of Development to Flowering Among Eight Maturity Isolines of Soyabean [Glycine max (L.) Merrill]

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