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测定了来自得克萨斯州1974和1975年两个生长季节四个种植地点的三个花生品种种子的发芽率及乙烯产生。由于乙烯是花生种子萌发的一种重要调节剂,所以作者试图研究初期幼苗生长上的差异与乙烯产生间的相关性。作者找出了三种生长分布与乙烯产生曲线:1、群体内的多数种子具有高度活力时(发芽70小时,78±8％的幼苗下胚轴胚根>20mm),它们也有一个特有的在发芽21小时时乙烯产生的最大值;2、群体内多数种子活力低时(只有30％幼苗下胚轴胚根>20mm),发芽21小时时乙烯的产生量是低的,而其最大值出现于发芽45小时;3、当群体内的多数种子介于上述(1)(2)两者之间幼苗呈中等生长时,乙烯产生量高的品种“星”和“塔纳特74”,在发芽21小时时,乙烯产生减少了50%,但乙烯产生比较低的品种“佛州蔓生”则无明显改变。对于“星”和“塔纳特74”两个品种而言,幼苗活力的降低,与发芽21小时时乙烯产生量减少显著相关,但“佛州蔓生”品种则不然。幼苗生长量与乙烯产生量以生长季节与种植地区而变化,但不管怎样,当乙烯产生速率超过临界最低水平时,群体内多数种子的幼苗表现出旺盛生长。 业已证明,在花生种子萌发过程中,乙烯具有自然调节的功能。其中包括这样一些论证:花生的胚是乙烯产生的主要部位;完整无损的,吸涨的和具有休眠性
The germination rate and ethylene production of three peanut seeds from four planting locations in Texas during 1974 and 1975 were measured. Since ethylene is an important regulator of the germination of peanut seeds, the authors sought to investigate the correlation between differences in initial seedling growth and ethylene production. The authors identified three patterns of growth distribution and ethylene production: 1. Most of the seeds in the population are highly viable (70 hours germinating and 78 ± 8% of seedling hypocotyl radicles> 20 mm) and they also have a characteristic The maximum value of ethylene production at 21 hours of germination was observed. 2. When the majority of seeds in the population had low viability (only 30% of seedling hypocotyls> 20mm), ethylene production was low at 21 hours of germination and its maximum appeared In the germination of 45 hours; 3, when most of the population within the sub-range between the above (1) (2) between the two seedlings showed moderate growth, the high ethylene yield varieties “Star” and “Tanat 74” Ethylene production was reduced by 50% at 21 hours of germination, but there was no significant change in the “Ethiopia” population with a lower ethylene production. For both “Star” and “Tanat 74” cultivars, the decrease in seedling vigor was significantly associated with a decrease in ethylene production at 21 hours of germination, but not in “Florida creeping” varieties. Seedling growth and ethylene production varied according to the growing season and the area planted, but in any case, the majority of seedling seedlings in the group showed robust growth when the ethylene production rate exceeded the critical minimum. It has been demonstrated that ethylene has a natural regulatory function during the germination of peanut seeds. These include the proof that peanut embryos are the main site of ethylene production; intact, aspirated and dormant