ラッカセイの莢の構造及び物理的特性と莢つき種子の寿命との関係について

日本作物学会紀事

前田 和美¹ 

[1] 元高知大学農学部

关键词: Arachis hypogaea;    ラッカセイ;    Longevity of seed-in-shell;    莢つき種子の寿命;    Physical characteristics of shell;    莢の物理的特性;    Structure of shell;    莢の構造;   

DOI  :  10.1626/jcs.75.518

学科分类：农业科学（综合）

来源: Nihon Sakumotsu Gakkai / Crop Science Society of Japan

【 摘 要 】

The viability of the seed-in-shell of groundnut is longer in small-seeded cultivars, and the role of the shell in the viability of the seed of groundnut was examined. Exocarp, mesocarp with vascular bundles, and endocarp were observed in the shell of immature pod. The thickness of exocarp plus mesocarp in very small-seeded cv. Chico was about 60% of that in large-seeded cv. Nakateyutaka, but no marked difference was observed between the two cultivars in the number of cell layers. In mature pods, the mesocarp occupied most of the shell, and a markedly developed sclerenchyma was observed in the innermost layer and around the vascular bundle in mesocarp. The large lysigenous aerenchyma-like space that developed between vascular bundle rows was suggested to play a role in moisture and gas exchange. In the medium—large-seeded cultivar group (22 cvs.), the pod weight, seed weight/pod, volume of seeds/pod, volume of ovarial cavity, pod surface-area, shell weight, volume of shell, and volume of inner space of ovarial cavity of dried mature pod were about twice as large as those in the small-seeded cultivar group (18 cvs.). However, the difference between the two cultivar groups was small in shell thickness, and negligible in shell density. Further studies on the effects of difference in structure and physical characteristics of shell on moisture and gas exchange of the seed are necessary.

【 授权许可】

Unknown