Effect of the Allelopathy on the Succession of Some Plants in Germination and Growth Traits.

Ali, Abdalla Y.; Aziz, Jasem M.

doi:10.32894/kujss.2018.13.4.14

Effect of the Allelopathy on the Succession of Some Plants in Germination and Growth Traits.

Document Type : Research Paper

Authors

Abdalla Y. Ali ¹
Jasem M. Aziz ²

¹ Department of Biology, College of Education – Hawija, University of Kirkuk, Kirkuk, Iraq .

² Department of Field Crops, College of Agriculture, University of Tikrit, Tikrit, Iraq.

10.32894/kujss.2018.13.4.14

Abstract

The effect of the Allelopathy on the succession of some plants in the soils previously planted with sunflower, Alfalfa, Okra, pumpkin, cowpea, and tomato plants was studied in germination of the seeds and growth of the above mentioned plants. The results of this study showed that the Allelopathy had an effect on the subsequent crops, which caused a significant reduction in the percentage of germination of plant seeds. The highest percentage of germination in the seeds of the sunflower (97.44%) was planted after the pumpkin and tomato plants. The effect of the Allelopathy in the growth of seedlings (length of the Plumule and the Radiant and their dry weight) varied in their effect on the subsequent crop between inhibition and stimulation. The cultivated soil was more stimulating in the length of the Plumule (12.93 cm) And the least stimulating soil Tomato (2.80 cm) in the germination of the seeds of the sunflower, as for the length of the root, the soil of the Okra was more stimulating in the germination of cowpea seeds (26.69 cm) and the least inhibition of gourd soil was (2.63 cm) in the germination of the seeds of the tomato..

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