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Time of Flowering of Pea (Pisum sativum L.) as a Function of Leaf Appearance Rate and Node of First Flower
, Duthion C.
Annals of Botany
, 1993. V. 72. No. 2. P. 133–142
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Oxford University Press · firstname.lastname@example.org
In order to assess the influence of environmental conditions on time of flowering of pea ( Pisum sativum L.), a serial sowing trial was conducted over 2 years at Dijon, France, on two winter cultivars Frisson and Frilene. Time of flowering was analysed according to two variables: the leaf appearance rate RL and the node of first flower NI . RL was linearly related to temperature ( r2 = 0·94). The base temperature was 2°C for both varieties. Growth rate accounted for the residual variability of RL . Photoperiod and temperature acted on NI in an additive way. Frilene, the later genotype, was more responsive than Frisson. A model for predicting time of flowering based upon these results is proposed. Deviations from this model were related to N nutrition in interaction with the plant water relations. Steps for improving the model are then discussed. Copyright 1993, 1999 Academic Press