THE STRUCTURE OF THE PERICARP AND TESTA OF BARLEY
THE STRUCTURE OF THE PERICARP AND TESTA OF BARLEY
复制标题
DOI：
10.1002/j.2050-0416.1984.tb04244.x
复制
发表时间：
1984-01-01
影响因子：
2.6
通讯作者：
PALMER, GH
中科院分区：
文献类型：
--
作者：
FREEMAN, PL;PALMER, GH
对成熟大麦籽粒的覆盖层的详细显微镜研究表明，在外壳下面，果皮由高度压缩的细胞物质组成，细胞物质由薄的外角质层结合。种皮是双细胞层，也由外角质层结合。最内层的角质膜将种皮与珠心的残余部分分开。这层膜是珠心起源的，而不是种皮的一部分。种皮的外角质层在腹沟和珠孔区不完整。种皮角质层的缺乏和珠孔处果皮相对未压缩的性质可能有助于胚胎吸收溶质。
Detailed microscopic study of the covering layers of the mature barley grain shows that beneath the husk the pericarp consists of highly compressed cell material bound by a thin outer cuticle. The testa is a double cell layer, also bound by an outer cuticle. An innermost cuticular membrane separates the testa from the remains of the nucellus. This membrane is of nucellar origin and not part of the testa. The outer cuticle of the testa is incomplete in the ventral furrow and in the micropylar area of the grain. The absence of the testa cuticle and the relatively uncompressed nature of the pericarp at the micropyle may facilitate uptake of solutes by the embyro.