Özet:

Description: The quality of the seed in the beans may be low in relation to hereditary structure. In these varieties, because they are more sensitive to environmental conditions, weak fide development and low productivity are observed. In this study, it was carried out with the aim of investigating the existence of similar problems in nationally registered beans (Sugar, Şehirali-90, Yunus-90, Karacaşehir-90 and Shahin-90).  The KN-127 line with a single color and Contender beans are used as controls. All of the varieties used in the study were tested separately in NaNO3 (-1.6 MPa) and di-ionized water. At the end of the study, higher water absorption rates, excessive seed emissions, and enine kotyledon fractures, were determined in white tanes varieties than colored tanes. These characteristics are shown among the most important causes that lead to weak output and fide development. However, the variation between the variations has been confirmed.       SEED QUALITY IN PHASEOLUS BEAN (Phaseolus Vulgaris L.) CULTIVARS IN RELATION TO SEED COLOR SUMMARY: Early reports indicate that white seed phaseolus bean cultivars have inherent problems of poor seed quality and higher susceptibility to environmental conditions during seedling growth leading to poor yields. This study was undertaken to screen five nationally registered white seeded Turkish Phaseolus bean cultivars (Sugar, City-90, Yunus-90, Karacaşehir-90 and Shahin-90) in terms of widely encountered causes of poor seed vigour in comparison with coloured seed genotypes (KN-127 and Contender) under controlled laboratory conditions at The Faculty of Agriculture in Erzurum.                Tests showed that white seeded cultivars had higher rates of water absorption, higher levels of seed leachate conductivity and greater percentages of transverse cracking on the adaxial and abaxial surfaces of cotyledons, all of which were associated with poor seedling vigour.  However, there occurred variation between and within genotypes.