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Analysis of Branching in Spring-sown White Lupins (Lupinus albus L.): The Significance of the Number of Axillary Buds
NICOLAS M. MUNIER-JOLAIN, BERTRAND NEY and CLAUDE DUTHION
Annals of Botany
Vol. 77, No. 2 (February 1996), pp. 123-131
Published by: Oxford University Press
Stable URL: http://www.jstor.org/stable/42761787
Page Count: 9
You can always find the topics here!Topics: Branches, Branching, Plants, Plant growth, Sowing date, Plant density, Field experiments, Leaves, Leaf buds, Sowing
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Plant density and sowing date were shown to affect branching in spring-sown white lupin (Lupinus albus L.), but the response varied among environments. The patterns of primary and secondary branching in the cv. Lublanc were studied as a function of both the number of axillary buds and the plant growth rate. Field experiments that used a wide range of sowing dates and plant densities to alter plant architecture were conducted over 5 years, and these were supplemented with data from additional glasshouse and growth cabinet experiments. The number of axillary buds on the main stem or primary branches, which determined the potential number of branches, increased linearly with the number of nodes. In situations where all axillary buds did not produce branches, it was found that the number of primary and secondary branches produced was related to the plant growth rate at the beginning of branch elongation. Knowledge of the number of axillary buds improved the analysis of the interaction between cultural practices and environmental conditions on plant architecture. The variability of branching potential among genotypes was discussed.
Annals of Botany © 1996 Oxford University Press