Factors affecting the dormancy and germination of bleeding heart [Lamprocapnos spectabilis (L.) Fukuhara] seeds.,Plant Biology

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Factors affecting the dormancy and germination of bleeding heart [Lamprocapnos spectabilis (L.) Fukuhara] seeds.
Plant Biology ( IF 4.2 ) Pub Date : 2020-02-26 , DOI: 10.1111/plb.13089
J S Cho _{1,

2} , B K Jang _{1,

2} , S M Lee ₃ , I J Lee ₄ , C H Lee _{1,

2}

Affiliation

Information on the optimal conditions to promote the germination of Lamprocapnos spectabilis (L.) Fukuhara seeds is limited; consequently, this study was conducted to establish the requirements to break seed dormancy and promote germination. The selected seeds had morphophysiological dormancy and had not begun embryo development. To study the dormancy breaking and embryo development processes, seeds were subjected to constant or changing temperature treatments during moist stratification. High temperature and humidity resulted in vigorous embryo growth, with the longest embryos occurring after 1 month of incubation at 20 °C. At 4 °C, the seeds required incubation period of at least 3 months to germinate. Embryo growth and germination were higher with changing high and low temperatures than under a constant temperature, and changing temperatures also considerably changed the endogenous hormone levels, embryo development and germination. Bioactive gibberellin (GA) content was higher in seeds incubated at 20 °C for 1 month, then at 4 °C for 2 months. The content of endogenous abscisic acid in seeds subjected to the same treatment decreased by 97.6% compared with that of the untreated seeds. Embryo growth and seed germination require changing high and low temperatures; however, exogenous GA3 could substitute for high temperatures, as it also causes accelerated germination. In this study, the seeds of L. spectabilis were identified as an intermediate simple type, a sub-level of morphophysiologically dormant seeds.

中文翻译：

影响出血心脏[Lamprocapnos spectabilis（L.）Fukuhara]种子休眠和萌发的因素。

关于促进福袋楠（Larprocapnos spectabilis（L.）Fukuhara）种子萌发的最佳条件的信息有限；因此，进行这项研究是为了确定打破种子休眠和促进发芽的要求。选定的种子具有形态生理休眠，尚未开始胚胎发育。为了研究休眠破坏和胚胎发育过程，在潮湿分层过程中对种子进行了恒定或变化的温度处理。高温和高湿度导致胚胎生长旺盛，最长的胚胎在20°C孵育1个月后出现。在4°C下，种子需要至少3个月的孵育时间才能发芽。高温和低温下的变化比恒定温度下的胚胎生长和发芽更高，温度的变化也极大地改变了内源激素水平，胚胎发育和发芽。在20°C下孵育1个月，然后在4°C下孵育2个月的种子中具有较高的生物活性赤霉素（GA）含量。与未经处理的种子相比，经过相同处理的种子中内源脱落酸的含量降低了97.6％。胚胎生长和种子发芽需要改变高温和低温；但是，外源GA3可以代替高温，因为它还会导致加速发芽。在这项研究中，美洲山葵种子被鉴定为中间简单类型，是形态生理休眠种子的一个子级别。在20°C下孵育1个月，然后在4°C下孵育2个月的种子中具有较高的生物活性赤霉素（GA）含量。与未经处理的种子相比，经过相同处理的种子中内源脱落酸的含量降低了97.6％。胚胎生长和种子发芽需要改变高温和低温；但是，外源GA3可以代替高温，因为它还会导致加速发芽。在这项研究中，美洲山楂种子被鉴定为中间简单类型，是形态生理休眠种子的一个子级别。在20°C下孵育1个月，然后在4°C下孵育2个月的种子中具有较高的生物活性赤霉素（GA）含量。与未经处理的种子相比，经过相同处理的种子中内源脱落酸的含量降低了97.6％。胚胎生长和种子发芽需要改变高温和低温；但是，外源GA3可以代替高温，因为它还会导致加速发芽。在这项研究中，美洲山葵种子被鉴定为中间简单类型，是形态生理休眠种子的一个子级别。但是，外源GA3可以代替高温，因为它还会导致加速发芽。在这项研究中，美洲山葵种子被鉴定为中间简单类型，是形态生理休眠种子的一个子级别。但是，外源GA3可以代替高温，因为它还会导致加速发芽。在这项研究中，美洲山葵种子被鉴定为中间简单类型，是形态生理休眠种子的一个子级别。

更新日期：2020-02-26

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