Effects of temperature and irradiance level on carbohydrate content and keeping quality of Christmas begonia (Begonia × cheimantha everett)
Effects of temperature and irradiance level on carbohydrate content and keeping quality of Christmas begonia (Begonia × cheimantha everett)
复制标题
温度和光照水平对圣诞秋海棠(Begonia × cheimanthaeverett)碳水化合物含量及保鲜品质的影响
DOI：
10.1016/0304-4238(92)90175-c
复制
发表时间：
1992
影响因子：
4.3
通讯作者：
T. Fjeld
中科院分区：
文献类型：
--
作者：
T. Fjeld
以秋海棠为研究对象，在15、30和60 μmol m−2s−1的辐照水平和15、18和21℃的温度条件下，对秋海棠生长后期的碳水化合物含量和保鲜品质进行了测定。根据光照水平和温度的不同，这一阶段持续11 ~ 24 d。在上市阶段测定了蔗糖、葡萄糖和淀粉的含量。在模拟室内气候条件下，测定植株3周后的贮藏质量。在生长后期，温度和光照水平的升高都促进了花的发育。在销售阶段，温度对植株品质和碳水化合物含量没有影响，但在室内气候中，高温导致3周后花茎高度增加。在销售阶段，辐照水平的增加导致淀粉含量的显著增加。内保温期开花百分数的增加与花序中蔗糖和淀粉含量以及叶片中淀粉含量高度相关。上市期花序和叶片中大量的淀粉库降低了内部保温期的脱落率。
The carbohydrate content and keeping quality of Christmas begonia were determined in a factorial experiment in which the plants were subjected to irradiance levels of 15, 30 and 60 μmol m−2s−1and to temperature levels of 15, 18 and 21°C for the last part of the growing period. This period lasted from 11 to 24 days depending on irradiance level and temperature. The contents of sucrose, glucose and starch were determined at the marketing stage. The keeping quality of the plants was determined after 3 weeks in a simulated interior climate. Increase in temperature and irradiance level both enhanced the development of flowers during the later part of the growing period. The temperature did not have any effect on plant quality at the marketing stage nor on the carbohydrate content, but high temperature caused an increase in flower stem height after 3 weeks in interior climate. Increase in irradiance level caused a significant increase in the content of starch at the marketing stage. Percent increase in new flowers during the interior holding period was highly correlated with the contents of sucrose and starch in the inflorescences and with the content of starch in the leaves. A large starch pool in the inflorescences and in the leaves at the marketing stage reduced the abscission rate during the interior holding period.