番茄的茎解剖和发育方面,American Journal of Botany

当前位置： X-MOL 学术 › Am. J. Bot. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

番茄的茎解剖和发育方面
American Journal of Botany ( IF 2.4 ) Pub Date : 1964-01-01 , DOI: 10.1002/j.1537-2197.1964.tb06593.x
Neal P. Thompson ₁ , Charles Heimsch ₁

Affiliation

解剖发育的各个方面与番茄植株的节间生长相关，品种“黄梅”，生长超过 3 个月。每周在对照植物和为解剖学研究收获的植物中测量节间长度。大体结构表明随着年龄的增长逐渐发展。初级木质部和韧皮部首先在不同的链中成熟，并且这些链通过原形成层横向连接以形成连续的维管圆柱体。初级韧皮部出现在早期形成的维管束之间的原形成层的外围。在节间伸长过程中原形成层中的连续斜周分裂导致细胞明显的径向序列化。Procambial 衍生物包含在厚壁木质化血管细胞的圆柱体中，在伸长停止后变得突出。次生木质部在包括原生木质部的茎段中具有更大的径向宽度。在早期的次生生长期间，血管仅在这些部分的次生木质部中发育。有核纤维和射线构成次生木质部的其余部分。射线表现出在其他生长习性降低的植物中注意到的组织。其中一些解释与早期研究中对番茄所描述的不一致，并且在与发育的相关方面相关的情况下对其进行了讨论。对番茄 (Lycopersicon esculentum Mill.) 的解剖学研究与关注该物种的营养和生理学、园艺学和遗传学的其他阶段的研究相比越来越少。尽管某些研究强调了成长和发展的各个方面，很少关注结构特征的发展。先前对茎结构的研究（Heimsch、Rabideau 和 Whaley，1949）表明茎节间发育状态的信息对于某些解剖关系的批判性解释至关重要。Hayward (1938) 将番茄的初级茎描述为解剖的两性虹吸管柱，其中双侧束首先被宽阔的髓射线分开。他进一步指出，外部韧皮部链与内部韧皮部的链一样，起初形成一个不连续的环，但在次生韧皮部发育之后，这个外部区域或多或少是连续的。海沃德将束状形成层形成的次生木质部描述为由大血管和木质薄壁组织组成，由束间形成层产生的，主要是结缔组织或结缔组织。与内外韧皮部相关的纤维被海沃德称为周环纤维。Woodcock (1935) 回顾了茎的主要组织。年轻的茎几乎

"点击查看英文标题和摘要"

STEM ANATOMY AND ASPECTS OF DEVELOPMENT IN TOMATO

Aspects of anatomical development were correlated with internodal growth in tomato plants, variety 'Yellow Plum,' grown for more than 3 months. Internodal length was measured weekly in control plants and those harvested for anatomical study. Gross structure indicated progressive development with increasing age. Primary xylem and phloem first mature in distinct strands and the strands are joined laterally by procambium to form a continuous vascular cylinder. Primary phloem occurs on the outer periphery of the procambium between the early-formed vascular strands. Successive periclinal divisions in the procambium during internode elongation give rise to pronounced radial seriations of the cells. Procambial derivatives are included in the cylinder of thick-walled, lignified vascular cells that become prominent after elongation ceases. Secondary xylem is of greater radial width in the stem sectors which include protoxylem. During early secondary growth, vessels develop in the secondary xylem only in these sectors. Nucleate fibers and rays constitute the remainder of the secondary xylem. The rays exhibit an organization noted in other plants of reduced growth habit. Some of these interpretations do not agree with those described for tomato in earlier studies, and they are discussed in relation to pertinent aspects of development. Anatomical investigations of tomato, Lycopersicon esculentum Mill., have been fewer and less extensive than those which have been concerned with the nutrition and other phases of physiology, horticulture, and genetics of this species. Although certain studies have emphasized aspects of growth and development, little attention has been given to the development of structural characteristics. A previous study of stem structure (Heimsch, Rabideau, and Whaley, 1949) suggested that information on the developmental status of stem internodes was essential for critical interpretations of certain anatomical relationships. Hayward (1938) described the primary stem of tomato as a dissected amphiphloic siphonostele in which the bicollateral bundles are at first separated by broad medullary rays. He stated further that the outer phloem strands, like those of the inner phloem, form a discontinuous ring at first, but after development of secondary phloem this outer zone becomes more or less continuous. Hayward described the secondary xylem formed by the fascicular cambium as consisting of large vessels and wood parenchyma, that produced by the interfascicular cambium being chiefly connective or conjunctive tissue. The fibers associated with the inner and outer phloem were termed pericyclic fibers by Hayward. Woodcock (1935) reviewed the primary organization of the stem. Young stems are nearly

更新日期：1964-01-01

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南