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Comparison of Growth and Physiological Indices between Diploid and Tetraploid Garlic Plants

YU Wen-yan,LIU Shi-qi*,LIANG Qing-ling,HAO Shu-qin(College of Horticulture Science and Engineering,Shandong Agricultural University,State Key Laboratory of Crop Biology,Taian 271018,China)  
The comparative study of growth,photosynthesis and physiological indices between diploid and tetraploid garlic plants were carried out.We drew the conclusions as follows.The numerical value of the stem diameter and length,leaf length and width of the tetraploid garlic were much bigger than those of diploid garlic during the growing period.Compared with the diploid garlic,the tetraploid garlic had higher chlorophyll content and photosynthesis speed.The soluble protein content and the activities of SOD,POD and CAT in the tetraploid garlic were higher than those of diploid ones.
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