Paper Information

Title: 

EFFECT OF MOTHER PLANT ENVIRONMENT ON SALINITY TOLERANCE AT GERMINATION AND EARLY SEEDLING GROWTH OF ANNUAL SOWTHISTLE (SONCHUS OLERACEUS)

Type: PAPER
Author(s): ABIN ABBAS,ESLAMI SEYED VAHID
 
 
 
Name of Seminar: IRANIAN WEED SCIENCE CONGRESS
Type of Seminar:  CONGRESS
Sponsor:  ANKOMANE OLOME ALAFHAYE HARZE IRAN
Date:  2010Volume 3
 
 
Abstract: 

IN ORDER TO STUDY THE INFLUENCE OF MATERNAL ENVIRONMENT ON SALINITY TOLERANCE AT GERMINATION AND EARLY SEEDLING GROWTH OF ANNUAL SOWTHISTLE (SONCHUS OLERACEUS), SEEDS OF TWO POPULATIONS OF ANNUAL SOWTHISTLE WERE COLLECTED FROM AHWAAZ AND BIRJAND WITH DIFFERENT CLIMATIC CONDITIONS AND A FACTORIAL EXPERIMENT WAS CONDUCTED BASED ON CRD WITH THREE REPLICATIONS AT THE RESEARCH LABORATORY OF THE FACULTY OF AGRICULTURE OF BIRJAND UNIVERSITY. EXPERIMENT FACTORS WERE THE POPULATION EFFECT WITH TWO LEVELS INCLUDING AHWAAZ AND BIRJAND POPULATIONS AND ALSO THE SALINITY EFFECT WITH 8 DIFFERENT LEVELS OF NACL INCLUDING 0, 10, 20, 40, 80, 160, 240 AND 320 MM. ANALYSIS OF VARIANCE SHOWED THAT THERE WAS A SIGNIFICANT DIFFERENCE BETWEEN THE TWO POPULATIONS IN TERMS OF GERMINATION CHARACTERISTICS. ACCORDING TO THE LOGISTIC MODEL ESTIMATION, THE NACL CONCENTRATION REQUIRED FOR 50% INHIBITION OF THE MAXIMUM GERMINATION WAS 218.56 AND 141.72 MM FOR AHWAAZ AND BIRJAND POPULATIONS, RESPECTIVELY, INDICATING A HIGHER SALINITY TOLERANCE OF AHWAAZ THAN THAT OF BIRJAND POPULATION AT GERMINATION AND EARLY SEEDLING GROWTH STAGE. THE SALINITY INFLUENCE ON PERCENTAGE AND RATE OF GERMINATION AS WELL AS SEEDLING VIGOR WAS HIGHLY SIGNIFICANT, WHILE THE SALINITY EFFECT ON THE LENGTH OF SEEDLING AND ROOT/SHOOT RATIO WAS INSIGNIFICANT.

 
Keyword(s): MATERNAL ENVIRONMENT, NACL, GERMINATION PERCENTAGE, GERMINATION RATE
 
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