Journal of Food, Agriculture and Environment

The effect of high temperature during flowering on growth, development and yielding of blue lupine – barley mixture

Author(s):

Janusz Podleśny ¹*, Anna Podleśna ²*

Recieved Date: 2012-02-10, Accepted Date: 2012-04-28

Abstract:

The research was conducted in climatic chambers and in a greenhouse on influence of high temperature during flowering on the growth parameters and yield of lupine-barley mix stands. Blue lupine var. Sonet and barley var. Johan were sown to Mitscherlich pots containing mixture of soil and sand, in the ratio of 5:2, respectively. The first experimental  factor was  the number of plants in a pot: a) lupine  5, b) lupine  5 + barley 10, c) barley 12. The second factor was the air temperature in the period of lupine flowering and pod setting: optimal (night/day 14/24^oC) and raised (night/day 18/ 30^oC). It was found, that high temperature in the period of flowering caused morphological changes in plants and disturbances in course of some phenological phases as compared to optimal conditions. As the result of increased temperature the leaf area decreased and periods of flowering and maturation underwent shorten. Besides, lower concentration of chlorophyll and lower intensity of net photosynthesis was shown in the leaves. High temperature at flowering in the greater degree affected the seeds than the vegetative organs yield. Decline of seed yield of lupine grown at higher air temperature conditions was a consequence of lower number of pods per plant and number of seeds per plant as well as significant decrease of thousand seeds weight. Whereas the decline of barley yield was caused by reduction of seed number per ear and thousand seed weight. High temperature in the period of flowering affected more negatively the growth, development and yielding of lupine and barley mixture and in the smaller degree when these plants were cultivated in the pure stand. Considering the lower sensitivity of barley than lupine to high temperature stress during flowering and greater yielding potential the mixture gave greater yield than lupine at pure stand. The highest yield gave barley cultivated without lupine. 

Keywords:

Blue lupine, barley, legume-cereal mixture, high temperature, flowering, development of plant, yielding

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Journal: Journal of Food, Agriculture and Environment
Year: 2012
Volume: 10
Issue: 2
Category: Agriculture
Pages: 500-504

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