Laboratory tests in relation to field emergence of some Egyptian cotton (Gossypium barbadense L.) varieties.

Abstract: Conducting vigor tests such as cool germination, tetrazolium test in addition to the standard germination test would be important to identify high cotton seed quality for planting or for storing as a carry over seed. The objective of the present study was to determine the value of some laboratory tests for predicting the performance of cotton seed under field conditions. Laboratory and field experiment were conducted on samples of nine certified seeds lots representing three Egyptian cotton varieties namely the extra long stable Giza70 and the long stable Giza 86, Giza 89 which occupy high percentage of the cultivated cotton area in Egypt. Laboratory tests were included standard germination, cool germination, accelerated aging germination these tests require a relatively long period at least ten days to be a accomplished, other quick laboratory or short tests such as electrical conductivity, seed cutting, free fatty acids and tetrazolium test were also included. Field emergence experiments were carried out at Kafr-Elshik Research Station during 2005 and 2006 growing seasons. The results revealed that the standard germination test has failed to predict field emergence of cotton seed lots. Conducting cool germination or tetrazolium test as a supplementary test in addition standard germination should reveal additional information on emergence ability of cotton seed under field conditions. The results of this study provide several alternative combinations which can be applied with lower costs and shorter time according to the available facilities. Furthermore, the results realize the importance of introducing vigor tests in
Publication year 2006
Pages 441-450
Availability location معهد بحوث المحاصيل الحقلية-مركز البحوث الزراعية -8ش الجامعه الجيزة
Availability number
Organization Name
City القاهرة
serial title حوليات العلوم الزراعية بمشتهر
ISSN 1110-0419
Department Seed Technology Research
Author(s) from ARC
Publication Type Journal