CSIRO Publishing blank image blank image blank image blank imageBooksblank image blank image blank image blank imageJournalsblank image blank image blank image blank imageAbout Usblank image blank image blank image blank imageShopping Cartblank image blank image blank image You are here: Journals > Crop & Pasture Science   
Crop & Pasture Science
Journal Banner
  Plant Sciences, Sustainable Farming Systems & Food Quality
 
blank image Search
 
blank image blank image
blank image
 
  Advanced Search
   

Journal Home
About the Journal
Editorial Structure
Contacts
Content
Online Early
Current Issue
Just Accepted
All Issues
Special Issues
Research Fronts
Farrer Reviews
Sample Issue
For Authors
General Information
Scope
Submit Article
Author Instructions
Open Access
For Referees
Referee Guidelines
Review an Article
Annual Referee Index
For Subscribers
Subscription Prices
Customer Service
Print Publication Dates

blue arrow e-Alerts
blank image
Subscribe to our Email Alert or RSS feeds for the latest journal papers.

red arrow Connect with us
blank image
facebook twitter LinkedIn

red arrow Farrer Reviews
blank image

Invited Farrer Review Series. More...


red arrow PrometheusWiki
blank image
PrometheusWiki
Protocols in ecological and environmental plant physiology

 

Article << Previous     |     Next >>   Contents Vol 22(4)

Temperature influences on the growth, digestibility, and carbohydrate compositions of two tropical grasses, Panicum maximum var Trichoglume and Setaria sphacelata, and two cultivars of the temperate grass Lolium perenne

JR Wilson and CW Ford

Australian Journal of Agricultural Research 22(4) 563 - 571
Published: 1971

Abstract

Two tropical grasses, Panicunl maximum var. trichoglume and Setaria spliacelata cv. Nandi were compared with two cultivars of Lolium perenne, S.24 and Kangaroo Valley, grown in controlled environment at day/night temperatures of 15.6/10, 21 .1/15.6,26.7/21.1, and 32.2/26.7¦C. The plants were harvested when still vegetative. The tropical grasses grew faster than the L. perenne cultivars at all but the lowest temperatures, and had a generally higher relative water content. The in vitro dry matter digestibility of the L. pereiine cultivars appeared inherently higher than that of the tropical grasses, but for each species digestibility Mtas modified by the environment and was highest at the lower growth temperatures. The tropical grasses were lower in alcohol- and cold water-soluble sugars, and higher in starch and structural (cell wall) carbohydrates than the L. perenne cultivars. For all grasses, as temperature increased from 15.6/10 to 26.7/21.1¦C the concentration of the structural carbohydrates increased whilst that of the total non-structural carbohydrates changed relatively little. A further increase in temperature to 32.2/26.7¦ resulted in a marked decline in the concentration of simple sugars and structural carbohydrates whilst polymeric sugars increased. At this latter temperature the starch content in Setaria and Panicurn increased to as high as 16 and 13% of dry weight respectively. The differences in digestibility appeared to be associated with the differences in the proportions of the different carbohydrate fractions.



Full text doi:10.1071/AR9710563

© CSIRO 1971

blank image
Subscriber Login
Username:
Password:  

 
PDF (431 KB) $25
 Export Citation
 Print
  
    
Legal & Privacy | Contact Us | Help

CSIRO

© CSIRO 1996-2015