与 «METAXYLEM»相关的英语书籍
在以下的参考文献中发现
metaxylem的用法。与
metaxylem相关的书籍以及同一来源的简短摘要提供其在 英语文献中的使用情境。
1
Xylem Structure and the Ascent of Sap
We can use the Hagen-Poiseuille equation to compute the relative conductivity of
five protoxylem vessels of 40-|im diameter to one metaxylem of 210-p.m diameter
; this ratio will be given by 5 (40/210)4 -0.007, i.e., somewhat less than 1%.
Melvin T. Tyree, Martin H. Zimmermann, 2002
2
Structure and Function of Roots
Both seminal and nodal roots of rice have three kinds of vessels, protoxylem,
early metaxylem and late metaxylem vessels, as well as two kinds of sieve tubes,
protophloem and metaphloem sieve tubes (Fig. 2C; Kawata et al., 1977f)- In the ...
Metaxylem is the xylem that develops later and usually consists of larger-
diameter cells. Three general types of protoxylem orientation are recognized: (1)
exarch, in which the protoxylem is oriented toward the outside relative to
metaxylem, ...
4
Teaching Plant Anatomy Through Creative Laboratory Exercises
Figure 90 illustrates the differentiation of protoxylem and metaxylem with
reference to the shoot apex. The first functional xylem tracheary elements (
protoxylem) are located towards the centre of the stem and have either annular or
helical ...
R. Larry Peterson, Carol A. Peterson, Lewis H. Melville, 2008
5
An Introduction to Plant Structure and Development: Plant ...
Scalariform, reticulate, and pitted tracheary elements, which comprise the
metaxylem, vary widely in distribution among different taxa. Scalariform elements
are characteristic of many pteridophytes, and are relatively less common in seed
...
6
Monocots: Systematics and Evolution: Systematics and Evolution
Protoxylem elements (mm & cm) Metaxylem vessels (m) Fig. 2. Diagram to show
essential and distinctive features of the vascular pattern in the stems of Calamus,
based on preliminary data. Left: the course of individual axial bundles.
Karen Wilson, David Morrison, 2000
So Poiseuille's law would predict that one old metaxylem vessel would be as
conductive as 357 early metaxylem vessels. There are typically 14 early
metaxylem vessels versus 7 late metaxylem vessels. If we compare the hydraulic
...
Hans de Kroon, Eric J.W. Visser, 2003
Protoxylem and Metaxylem The primary xylem is of two types : protoxylem and
meta xylem. Protoxylem is the early formed xylem. On the basis of location,
protoxylem may be exarch (located towards the periphery in roots), mesarch (
located in ...
9
Principles of Soil and Plant Water Relations
The wheat breeding program, as suggested by Passioura (breeding for small
central metaxylem element), has been applied in Australia (Richards and
Passioura, 1989). In field trials over 5 years in dry environments, narrow xylem
vessel ...
10
Transcriptional Switches During Development
This is because the other four HD-ZIPIIIs (PHV, REV, CNA, and ATHB8) are also
targets of the microRNA165/166 and act redundantly with PHB in the
specification of metaxylem and protoxylem. All HD-ZIPIIIs have been shown to be
directly ...
Serge Plaza, François Payre, 2012
