1990(1).
Abstract:本文研究了田间生长的玉米、高梁、芝麻、豇豆在不同土壤供水条件下,叶水势、气孔阻力、蒸腾速率日变化及其与环境因素的关系。结果表明,四种作物气孔开闭与光强密切相关:夜间气孔关闭,rs高;白天气孔开放,rs低。ψ_(WL)、TR与环境因素(气温、RH、ψ_(WV)、光强等)密切相关,它们之间的相关系数(在0.05和0.01水平)显著。四种作物ψ_(WL)日节奏为“正弦曲线”状,13:00—15:00小时ψ_(WL)最低,黎明前最高。中午ψ_(WV)和土壤含水量愈低。ψ_(ML)愈低。四种作物TR在早晨逐斩增高,13:00—15:00小时最强;傍晚前又降低;夜间TR最低。干旱植株ψ_(WL)、TR低于灌水植株,而rs高于灌水植株。
Lu Tie-gang , Wang Yi-shen , Zheng Guo-chang
1990(1).
Abstract:Hypocotylar explants of Onobrychts viciaefolia Scop were cultured on LS medium containing 1 mg/l BA, 1 mg/l KT. Two weeks after culture calli were initiated on the surface of sections. Nonembryogenic callus but with simitiar physiological state and higher
1990(1).
Abstract:This paper aimS to disscuss the systimatic position of Tetraena by embryblogical featrue. Embryological study shows that Tetraena and Zygophyllaceae are closely ralated, but they are different clearly. It is confirmed by. Tetraena anther wall development
Wang Yao-zhi , Wang Li-hong , and Gong Kui
1990(1).
Abstract:The dynamics of starch during ovular development in Vicia faba has been investigated by the PAS reaction,the results are summarized as follows; 1. No starch reaction was found at the initial stage of ovular development. As the ovule develops starch grains
Zhu Guang-hua , Xie Xin-ming , Yang Xi-ling
1990(1).
Abstract:The esterase and proxidase isoenzyme of 6 species and 2 varieties, 6 species of Elymus compared with 5 species of Agropyron have been comparatively studied by means of polyarcylamide electrophoresis. The quantative analysis of the species being analysed h
Wang Lun-shan , Ding Hui-bin , Wang Ya-fu , Yang Han-min , Kang Wen-jun
1990(1).
Abstract:The paper reports chromosome variation and differentiation frequency of in vitro callus subculture of F. pauidifiorae in different hormonal regimes. The results showed that the frequency of diploid cells is decreasing, the frequency of hypodiploid and hyp
(?)hangguan Zhou-ping , Chen Pei-yuen (Northwest Institute of Soft , Water Conservation , Academia Sinta , the Ministry of Water conservancy , Yangting , Shaanxi )
1990(1).
Abstract:Two cultivars of wheat(Drought resistant Feng kang No. 13 and Drought sensitive Zheng yin No. 1) seedings were used to determine the effect of water stress on photosynthesis. The results are as folloas: under mild water stress, net photosynthetic rate (Pn
1990(1).
Abstract:Hypocotyl segments of cabbage seedlings were cocultured with Agrobacterium rhizogenes in vitro, giving rise to 133 hairy root lines. After that,transformed plants were regenerated directly on the segments of transformed roots. All transformats got fro
