摘要
利用扫描电子显微技术对松嫩平原的羊草(Aneurolepidium chinense)、獐毛(Aeluropus litoralis)、星星草(Puccinelliateninflora)、朝鲜碱茅(P.chinampoensis)和野大麦(Hordeum brevisublatum)等5种耐盐碱牧草进行解剖结构研究,发现它们适应盐碱环境而演化出的各种特殊的结构特征,即:根的皮层薄壁组织形成大的通气腔(其形如水生植物的通气腔),茎中维管束演化出近散生结构,叶上表皮泡状细胞和气孔下陷,叶脉维管束鞘不为C_3植物型亦不为C_4植物型,而演化出C_3—C_4的中间类型。
Using the technology of scanning electron microscopy, which has studied the structure of the salt—resisting in five salt—tolerant forage plants in Song—nen Plain, i.e. Aneurolepidium chinense, Aeluropus litoralis, Puccinellia tenuiflora, P. chinampoensis and Hordeum brivisublatum. The result showed that those plants have the structure characters in resisting of drought and saline—alkali. In the root, the cells at the middle cortex tended to be disorganized to form extensive intercellular spaces which function as the aerenchyma. The aerenchyma like the water plant's. Their stem's vascular bundles were scattered within the parenchyma tissues. The bulliform cells and stomas are interred the cells of the epidermis. Leaves' vascular bundles sheath were not C_3 and C_4 style, which evolved the middle style between C_3 and C_4.
出处
《草业学报》
CSCD
1996年第2期9-13,共5页
Acta Prataculturae Sinica
基金
国家自然科学基金资助重大项目的一部分
关键词
盐生牧草
耐盐碱结构
扫描电子显微镜
Salt—tolerant forage plants, structure of the saline alkali—resisting, electron scanning microscopy
