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在荔枝试验中,昼/夜高温(30/25、25/20、20/15℃与15/10℃形成比较)增加了6个品种(“孟加拉”、“Haak Yip”、“Kwai May”、“Gee Kee”、“Tai So”和“Wai Chee”)幼苗各选系的茎长度、节数、叶片产生和植株干重.根据直线回归估计,幼苗枝梢生长(节产生)的平均日基温为11.0℃.此外,高温还增加总干重中的叶比率,降低其根比率.品种对幼苗生长的各方面具有明显影响,但对温度的各种反应却相同.本试验表明,在热带和暖性亚热带的许多荔枝产区,由于温度太高而不能在花蕾形成前促进良好的植株休眠.由此看来,在进行田间评定之前,增温温室的低活力荔枝幼苗评价是适应基因型(花果均处于温暖条件下)初次筛选的一种有用方法.
In the litchi trial, 6 cultivars (“Bangladesh”, “Haak Yip”, “Kwai May”) were added at day / night temperatures (30/25, 25/20, 20/15 and 15/10 ° C formation) “Gee Kee”, “Tai So” and “Wai Chee”) stem length, number of segments, leaf production and plant dry weight of each line of seedling.According to the linear regression estimation, the average daily basis of seedling shoot growth The temperature was 11.0 ℃ .In addition, the high temperature also increased the total dry weight in the leaf ratio, reducing the root ratio of varieties of seedling growth in all aspects have a significant impact, but the temperature of the various reactions are the same.This test shows that in the tropical And many lychee producing areas of warm subtropical zone can not promote good plant dormancy until flower bud formation due to the high temperature.Thus, low-vigor litchi seedling evaluation in warming greenhouse is adaptive genotype before field assessment (Both fruits are in warm conditions) a useful method of primary screening.