Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
 
Articles by N. Stavropoulos
Total Records ( 3 ) for N. Stavropoulos
  S.T. Kotzamanidis , N. Stavropoulos and C.G. Ipsilandis
  An extensive evaluation of 43 varieties from the Greek collection of groundnut was carried out during years 1986-90 in the farm of the Cotton and Industrial Plants Institute, Greece. A systematic characterization referred to eight botanical, morphological and agrophysiological traits included in the descriptor lists of IBPGR and ICRISAT, followed field evaluation. These traits were: growth habit, branching pattern, leaf colour, pod distance from the main root, synchronized pod maturity, days to emergence, days to 50% flowering and days to maturity. Principal Component Analysis (PCA) extracted two main factors representing 83% of the total variation. PC1 (interpreted as earliness factor) explained 68.4% and PC2 (interpreted as synchronized maturity factor) 14.6% of the total variance. Cluster analysis classified the assessed cultivars into distinct groups on the basis of earliness and synchronized pod maturity. The evaluation has shown that most of the Greek varieties botanically belong to the subspecies hypogaea and to Virginia type which is late material. Only a few varieties belong to the subspecies fastigiata and to Valencia or Spanish type and found to be an early genetic material. The evaluation also contributed in identifying certain varieties, such as Serraiki, Sakania Sindu and Poroia, as promising for their significant earliness, varieties Tragana, Ispaniki and Proimi Funtoti for high pod concentration and varieties Krestena, Karolina and Lakonia for highly synchronized pod maturity.
  S.T. Kotzamanidis , N. Stavropoulos and C.G. Ipsilandis
  Forty-three cultivars from the Greek collection of groundnut were characterized and evaluated for various agronomic and quality traits and resistance to waterlogging, during 1986-90 in the farm of the Cotton and Industrial Plants Institute. Seventeen morphological and physiological traits included in the descriptor lists of IBPGR and ICRISAT were used in total. Principal Component Analysis (PCA) extracted 5 factors representing 77.3% of the total variation. PC1 explained 35.6, PC2 14.2, PC3 13.0, PC4 8.4 and PC5 6.1% of the total variance. Cluster analysis classified the assessed cultivars into distinct cultivar-groups on the basis of pod and seed characteristics. The evaluation showed that most Greek Arachis cultivars belong to subspecies hypogaea, group Virginia. Only a few belong to subspecies fastigiata groups Valencia or Spanish. The experimental work succeeded in preliminary identification of certain cultivars with promising tolerance to waterlogging at harvest which are to be used either directly in the Arachis production zone in Northern Greece, or as breeding materials for the improvement of the species.
  S.T. Kotzamanidis , N. Stavropoulos and C.G. Ipsilandis
  Correlation between twenty-one traits was studied in plants of F2 generation derived from crosses of groundnut varieties. Also, correlation for the same traits of plants was studied within the four types of crosses used: Virginia × Virginia, Valencia × Valencia, Virginia × Spanish and Virginia × Valencia. Significant positive correlation have been found in the total of plants with r values ranging from 0.22 to 0.46 for pod yield with pod distance from the main root, seed length, seed width, pod length, pod width, grams/100 pod, grams/100 seed, shelling percentage. From the four types of crosses and for the same traits, in relation to the pod yield, the type cross Virginia × Virginia showed the most significant positive correlations followed by types Valencia × Valencia, Virginia × Valencia and Virginia × Spanish. Selection based on plants that have shorter pod distance from the main root and larger seed size and also larger 100 pod weight, could increase peanut yielding performance.
 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility