关键词: 转基因大豆, 转基因大豆, 比较优势, 经济利益, 专利制度

Abstract:

The ‘Cuiguan’ pears were used as test materials, and effects of the small bagging in two times bagging on fruits internal quality and appearance were studied. The results showed that: conclusively, comparing as control (abbreviated as CK), at ‘Cuiguan’ fruit maturing, mean single fruit weight increased; fruit hardness reduced; A treatment: fruit in big bag on May 12 behind it was in small bag on April 22, the soluble solids content was high (excepting for C black); pericarp thickness increased; fruit dot density increased; fruit dot diameter decreased; fruit surface brightness improved; the fruit in internal black outer yellow bag (abbreviated as black bag ) surface was lightest green and lighter yellow, the fruit in internal white outer yellow bag (abbreviated as white bag) skin color was green bias and yellow bias. The fruit in black bag had lighter mean single fruit weight, higher fruit hardness, more soluble solids content, thicker pericarp thickness, bigger fruit dot density, smaller fruit dot diameter, brighter fruit surface brightness, lighter green and lighter yellow than the fruit in white bag between the same treatments. In all, the effect about A treatment was better: the fruit had higher soluble solids content and higher fruit hardness, meanwhile, A white fruit mean single fruit weight was the biggest and A black fruit mean single fruit weight was bigger, comparing as CK.