Assimilates transfer between fern and rhizome over an extended season in ۲X and ۸X asparagus
سال انتشار: 1402
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 106
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شناسه ملی سند علمی:
JR_BREDNG-13-2_016
تاریخ نمایه سازی: 29 خرداد 1403
چکیده مقاله:
Asparagus (Asparagus officinalis L.) is a perennial vegetable crop with different ploidy levels. The translocation of assimilates in diploid (۲X) and octoploid (۸X) asparagus between rhizome and fern needs to be understood. Transfer of soluble sugars, pigments, and invertase activity were studied in the two-year-old asparagus from May to November ۲۰۱۹. Sucrose and glucose were the major soluble carbohydrates in the asparagus rhizome. In the case of ۲X asparagus, there was a balance of total sugars in the fern and rhizome, as opposed to anthocyanin. May and September were critical stages in the consumption or storage of substances in ۲X asparagus. Sucrose transferred from fern to rhizome from August to October in ۲X and ۸X. Total sugars in rhizome decreased from May to June in ۲X and ۸X. Invertase activity increased from May to June and after that declined in both ۲X and ۸X. The growth of fern was dominant to the rhizome until August and the loading of glucose in the rhizome was low. The discriminant analysis indicated the difference in the response pattern of the ۲X and ۸X asparagus, where the rhizome fructose, fern carotenoid, and rhizome glucose in ۲X but the rhizome sucrose, rhizome total sugars, fern fructose, fern anthocyanin, fern invertase, and fern sucrose were the most influential variables in these two types of asparagus. The total sugars, sucrose, glucose, and fructose transfer patterns in diploid and octoploid asparagus can be used for nutrition management by asparagus growers.
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نویسندگان
Behzad Ehsani
MSc Student, Department of Horticultural Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
Seyyed Javad Mousavizadeh
Associated Prof., Department of Horticultural Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
Kambiz Mashayekhi
Associated Prof., Department of Horticultural Sciences, Gorgan University of Agricultural Sciences and Natural Resources, Gorgan, Iran
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