Seed development in the rare cold desert sand dune shrub Eremosparton songoricum and a comparison with other papilionoid legumes
Seed development in the rare cold desert sand dune shrub Eremosparton songoricum and a comparison with other papilionoid legumes
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DOI：
10.1111/1442-1984.12098
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发表时间：
2016-07
影响因子：
1.4
通讯作者：
Huiliang Liu;Buhailiqiemu Abudureheman;J. Baskin;C. Baskin;Daoyuan Zhang
中科院分区：
文献类型：
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作者：
Huiliang Liu;Buhailiqiemu Abudureheman;J. Baskin;C. Baskin;Daoyuan Zhang
目前还没有研究种子在寒冷的沙漠沙丘中的发育。因此，我们的主要目的是（一）监测种子发育在寒冷的沙漠沙丘种Eremosparton songoricum从授粉到种子成熟的时间，和（二）比较种子发育在这个物种与其他物种的papilipiliprium豆科植物。对蝶形花科灌木E.古尔班通古特沙漠中的准噶尔盆地南缘。种子发育期为40 d。授粉后28天（DAP），种子达到生理成熟，在这个时候，58%的人发芽，他们已经开发出耐干燥。当种子含水量为10%左右时，种子在36 - 40 DAP之间变得不透水。成熟干燥的最后阶段是通过种脐失水而发生的。本文对E. songoricum的种子通常与报道的具有不透水的种皮（物理休眠）的其它蝶形豆科植物的种子相似。一般来说，发育特征的种子与水不渗透的外壳在成熟时似乎并不特定的栖息地或繁殖。
No study has yet been carried out on seed development in a cold desert sand dune papilionoid legume. Thus, our primary aims were to (i) monitor seed development in the cold desert sand dune species Eremosparton songoricum from the time of pollination to seed maturity, and (ii) compare seed development in this species with that in other species of papilionoid legumes. Fruit and seed size, mass and seed moisture content, and seed imbibition, germination, desiccation tolerance and water retention during development (pollination to seed maturity) were monitored in the papilionaceous shrub E. songoricum in the Gurbantunggut Desert of northwest China. The duration of seed development was 40 days. Seeds reached physiological maturity 28 days after pollination (DAP), at which time 58% of them germinated and they had developed desiccation tolerance. Seeds became impermeable 36–40 DAP, when their moisture content was about 10%. The final stage of maturation drying occurred via loss of water through the hilum. The developmental stages and their timing (DAP) in seeds of E. songoricum are generally similar to those reported for other papilionaceous legumes with a water-impermeable seed coat (physical dormancy). In general, the developmental features of seeds with water-impermeable coats at maturity do not appear to be specific to habitat or phylogeny.