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Higher Plants Contain Many Phytochemical Constituents That

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Higher plants contain many phytochemical constituents that are known to be biologically active compounds. These secondary metabolites not only play a pivotal role in plants producing them, but also affect their neighboring plant communities. Therefore, one of the mysteries in plant-plant interaction is the plant behavior in response to these various secondary metabolites. Several studies heavily discussed the impact of phyto-allelochemicals upon different crop plants including faba bean and maize (El-Darier, 2002; Madany and Saleh, 2015; Salama and Rabiah, 2015). However, to date, the influence of fenugreek upon these plants is unaddressed. Our results elucidate the effect of fenugreek seed extract on the growth and some physiological…show more content…
In a previous work, we found that faba bean seeds primed with 1.0mM coumarin showed a marked improvement in the length of both plumule and radical as well as their fresh and dry weights of faba bean seedlings and this could be attributed to the elevated levels of endogenous phyto-hormones (IAA, GA3, and ABA) (Saleh et al., 2014). Also tomato plants treated with salicylic acid exhibited a significant improvement in their dry weights (AL-Wakeel et al., 2012). SA as a spray solution to the shoots of soybean significantly increase the growth of the shoots and roots under greenhouse or field conditions (Li et al., 2014).
4.3. Chlorophyll
Chlorophyll is a biologically important pigment that is used for the photosynthetic conversion of inorganic molecules or ions into organic bio-molecules. Therefore, photosynthesis is one of the most crucial indicators of physiological activities in higher plants. Thus, the change of total chlorophylls content may affect carbon fixation and carbohydrate status by impairing the plant’s photosynthetic capacity. reported that Orobanche ramosa strongly reduced the biomass and yield of the host plant not only by acting as a competing sink for assimilate, but also by compromising the efficiency of carbon assimilation via a reduction in leaf chlorophyll content and photosynthetic rate. The different levels of fenugreek seed extract improve the levels of chlorophyll a and b as well as carotenoids
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