Physiology of the pea crop by Nathalie Munier-Jolain, Veronique Biarnes, Isabelle Chaillet

By Nathalie Munier-Jolain, Veronique Biarnes, Isabelle Chaillet

This e-book was once written either through researchers from diversified disciplines andplant physiologists who've been operating jointly for a few years at the creation of vegetation wealthy in proteins in France and in Europe. It provides the present prestige of data at the body structure of the pea crop. content material: Vegetative improvement: the morphogenesis of plant organs -- Carbon acquisition on the crop point in pea -- Dilution curve -- Carbon and nitrogen fluxes in the plant -- The seed quantity -- Abiotic stresses -- Biotic stresses -- A version which integrates wisdom on pea crop body structure and agronomic prognosis -- idea for a diagnostic method of examine yield diversifications in peas -- Genotype x setting interplay for yield and protein focus -- clients for legume plants in France and Europe. summary: offers the prestige of data at the body structure of the pea crop. This publication discusses vegetative and reproductive improvement, progress less than non-limiting stipulations, and the nitrogen food of the pea crop. It then explores the results of the abiotic and biotic stresses at the improvement in addition to the expansion and nitrogen uptake through the plant. learn more...

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The changes in size of the various vegetative organs with their position on the stem are comparable. Size increases for the organs located at the bottom of the stem. It is relatively similar for the organs to be found on the central section of the stem, while size decreases for the organs located at the top of the stem. We have seen that in the absence of constraint the organ size differences between stem position are related to the duration of the cellular division phase. According to this expansion pattern where the duration of cellular division determines organ size, size should increase until phytomer 19, then remain constant for those following (Turc and Lecoeur, 1997).

During this phase, ARNm content falls by 90%, proteins content falls by approximately 30%, whereas RubisCo and chlorophyll content more or less maintain their level at the time of unfolding; the leaf then has a period of optimal photosynthetic functioning of approximately 200°Cj; then the leaf enters senescence gradually. Its RubisCo and chlorophyll contents decline gradually while there is a build-up of senescence markers such as of cysteineproteinase ARNm. During this phase photosynthetic activity drops off rapidly.

The main stem corresponds to the first axis of the plant (1st order). The lateral branches, whether developed or not, located in the axil of a leaf on the main stem constitute the 2nd order of axis, and so on for further orders of axis. In order to identify an axis on the plant, the terminology proposed takes into account the position of the considered axis on the lower axis which bears it (fig. 12). Ri identifies a lateral axis borne by node i of the main stem. When many buds are located at the same node, the second bud is called “prim” (p) and the next “second” (s) and so on.

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