Effects of sowing date on photosynthetic characteristics, chlorophyll fluorescence and yield of different Echium plantagineum L. cultivars

文献类型： 外文期刊

第一作者： Wang, Wu

作者： Wang, Wu;Li, Hongming;Xu, Huifeng;Xu, Zhen;Wu, Ying;Ji, Shengzhen;Wang, Tao;Wei, Longxue;Yan, Chengming

作者机构：

期刊名称：SCIENTIFIC REPORTS （ 影响因子：4.6； 五年影响因子：4.9 ）

ISSN： 2045-2322

年卷期： 2023 年 13 卷 1 期

页码：

收录情况： SCI

摘要： The seed oil of Echium plantagineum L. is rich in unsaturated fatty acids. With the gradual development of the value of echium oil in food, medical care and cosmetics, the corresponding market demand has also increased. The selection of suitable cultivars and the increase of yield per unit area has also become one of the main objectives of current breeding and cultivation of E. plantagineum. To effectively use the local photothermal resources, to improve the use of light energy by E. plantagineum, and to enhance the growth and yield of E. plantagineum. E. plantagineum cultivars Blue Bedder and Mixed Bedding were used as research subjects to study the effects of different sowing dates (1 May, 8 May, 15 May, 22 May and 29 May) on the photosynthetic characteristics and yield of E. plantagineum. Under the same cultivar conditions, with the delay in sowing date, the leaf chlorophyll content (SPAD), photosynthetic rate (P-n), transpiration rate (T-r), stomatal limitation value (L-s), photochemical quenching (qP), electron transfer rate (ETR), actual photochemical efficiency (CopsII) and yield of Blue Bedder decreased and reached a maximum at T1, while the SPAD, P-n, T-r, water use efficiency (WUE), Ls, initial fluorescence (F-o), maximum fluorescence (F-m), qP, ETR, FpsII and yield of Mixed Bedding reached the maximum at T4. Blue Bedder should be sown early at T1 and Mixed Bedding late at T4 during planting, which will help to improve the photosynthetic characteristics and grain yield of E. plantagineum.

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