|Table of Contents|

Root Distribution Characteristic of P.cornutum(L.) Gaertn and P.dolabratum Maxim in Mu Us Sandy Land(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2012年08期
Page:
20-24
Research Field:
Publishing date:

Info

Title:
Root Distribution Characteristic of P.cornutum(L.) Gaertn and P.dolabratum Maxim in Mu Us Sandy Land
Author(s):
HUANG Xiu-mei; HAO Li-zhen; WANG Huai-dong; PANG Jie
Inner Mongolia Agricultural University，Key Laboratory of Wild Peculiar Vegetable Recourse and Germplasm Enhancement，Hohhot，Inner Mongolia 010019
Keywords:
Mu Us Sandy Land; Cruciferae; Pugionium gaertn; P.cornutum; P.dolabratum; roots
PACS:
S 647
DOI:
-
Abstract:
The distribution characteristics and the horizontal roots spatial distribution and the soil moisture around the root system of P.cornutum and P.dolabratum in Mu Us Sandy Land were studied，by using the methods of digging out whole roots.The results showed that round the biennial roots system of P.cornutum and P.dolabratum, the soil moisture were (3.13±0.46)% and (1.90±0.68)% respectively；around the annual roots system，the soil moisture were (2.68±0.11)% and (2.50±0.45)% respectively.The primary roots of P.cornutum and P.dolabratum were all nearly vertical，the horizontal roots system were extremely developed，but number less.The tap-root length of P.cornutum and P.dolabratum of biennial all were 120 cm;the longest horizontal roots were 380 cm and 400 cm respectively；the length of total horizontal roots were 1 590 cm and 3 340 cm respectively；the maximal spacial distribution all were from 20 to 40 cm in the soil depth，from 0 to 40 cm in the radius range.The roots’ adaptive mechanism of P.cornutum and P.dolabratum had strong tap-roots to absorb more water.P.dolabratum had strongger adaptive than P.cornutum to low soil moisture content.

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Last Update: 2014-08-30