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Research Journal of Seed Science

Year: 2012 | Volume: 5 | Issue: 1 | Page No.: 19-31
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Authors

A.A. Kandil

A.E. Sharief

A.M.A. Odam

Keywords

Research Article

Dormancy Overcoming of Some Alfalfa Varieties

A.A. Kandil, A.E. Sharief and A.M.A. Odam
The purpose of this study was to find out the impact of diverse temperature plus scarification actions and the same temperature without scarification on the lessening of percentage of hard seeds and enhancement other germination strictures in five alfalfa varieties i.e., Siriver, Sewa 1, Ismailia 1, Balady 1 and El-Wady El-Gaded 1. The experimental contained nineteen different treatments i.e., control treatment; 5 h+5°C; 5 h+0°C; 5 h+20°C; 5 h+40°C; 5 h+80°C; 5 h-5°C; 5 h-10°C; 5 h-20°C; 2 h-80°C and the same treatments plus sandpaper scarification(s) except control treatment. Alfalfa varieties significantly varied in means of hard seed percentage, percentage of abnormal seedling, percentage of dead seeds, germination percentage free of hard seeds, normal germs percentage, energy for germination percentage, coefficient velocity percentage, Mean Germination Time (MGT) by days and value of the vigour percentage. Balady 1 variety had only positive effects in all studied characters while; El-Wady El-Gaded 1 cultivar had only negative effects on all germination parameters under study. Break down dormancy managements significantly varied in all germination parameters under study. The two treatments, -80°C+(s) and -80°C were very effective since they reduced the percentage of hard seeds in judgment with the control by 70.455 and 63.636%, respectively, while their influence on dead seed percentage was completely different. The treatment of -5°C had only positive effects on other germination parameters that were reflected in the highest values for germination energy and germination percentage of free of hard seed.
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Comments

Dr.P.k.Nagar Reply

It is advised that some more studies should hav been done since alflafa varies differ germination %

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