Protection effect of low-temperature on some snap bean (Phaseolus vulgaris l) varieties green yield and some isozyme levels [electronic resource].
تأثير الحماية من الحرارة المنخفضة لبعض أصناف الفاصوليا على المحصول ومستوى بعض الانزيمات.
- p.661-678.
Includes references.
Two field experiments were conducted in Shark Al-Owinat area (Eastern-South Egypt) during two growing seasons (2000/2001, 2001/2002) to evaluate six varieties of snap bean (paulista, Xera, Samantha, Ferrari, Bronco and Narina) under two materials of low tunnels i.e plastic (polyethylene) and agrel (polypropiolene) as well as open field conditions, vegetative growth, green yield and physiological response (peroxidase and esterase enzymes) were estimated. Results indicateed that Paulista var. plants were the tallest with higher dry matter of total plant .leaves and branches as well as yielded the highest total, early and exportable yield of green pods. Narina plants were the shortest with lowest values of dry matter of leaves, branches, and total plant as well as the lowest total, early and exportabte green yield. Other cultivars recorded values ranging between those two varieties. Protected plants recorded higher vegetative growth as well as total, early and exportable yield compared with those of the open field. Plants grown under plastic low tunnels recorded higher vegetative growth and total green yield compared with agrel covered plants. All the tested varieties recorded higher vegetative growth, total, early and exportable yield under protection plastic compared with agrel or open field plants, Electrophoretic studies showed that plastic and agrel tunnels may encourage peroxidase isozyme synthesis in snap been varieties and having the highly significant values for yield and some of its quality compared with open field. For esterase electrophoresis, the varieties having the highly significant yield showed very faint esterase binds due to plastic low tunnel treatment. However, the agrel treatments encourage esterase bands intensities in the same varieties.