【摘要】 为了研究大豆光合产物一日内的运转分配规律,用核素¹⁴C 标记大豆幼苗,通过接触法放射自显影定量技术,对大豆光合产物的运转分配进行了测定.更多还原

【Abstract】 The characteristics of translocation and distribution of photosynthates du- ring a day was studied by using nuclide ¹⁴C to label soybean seedlings and determined by quantitative autoradiography. The results showed that ¹⁴CO₂ assimilated by functional leaves was tran- sported outward rapidly.According to the images ofautoradiography.The stems and roots blackened at the beginning of the 2nd hour after labelling. Although the growing point of stem blackened at first,but the extent of blackening was not heavy.A higher proportion of assimilates was transported into the roots.The assimilates translocated from the leaves increased with time,it was 14.2% at first hour,21.9% at Gth hour and 37.1% at 21th hour.更多还原