Research on the determination of morphological and molecular diversity among some varieties, lines and cultivar of grasspea (Lathyrus sativus L.)

The purpose of this study conducted at the Field Crops Department of Agricultural Faculty of Cukurova University during the growing season of 2005-2006 was to determine morphological and molecular diversity among 5 varieties, 4 lines and one cultivar of grasspea. Morphological diversity was studied in the field experiment arranged in randomized complete block design with three replications at the research area of Field Crops Department. Molecular diversity was studied by using 10 of ISSR primers. The results of the study showed that the varieties, lines and cultivar studied were statistically significant different in plant height, stem length, number of stems per plant, number of leaves on lengthiest stem of plant, green forage and hay yield per plant, days to 50 % flowering, number of pods per plant, pod length, pod width, number of seeds per pod, 1000 seed weight and seed yield per plant. According to the Jaccard?s similarity index, similarity index values between varieties, lines and cultivar ranged from a minimum of 0.33 to a maximum of 0.79, the average being 0.58. From these coefficient values, it was concluded that L. sativus var. albus and L.sativus var. azureus were close related varieties. L sativus var. coloratus and line 452 were distant related. In the dendrogram obtained from the similarity index data plants of 5 varieties, 4 lines and one cultivars formed two main groups, as A and B. The group A was occupied by the plants of line 452. There were two sub-groups in the group B, as B1 and B2. Plant of L.sativus var. colaratus fell in to sub-group of BI. Sub-group B2 was divided into two sub-sub groups as B21 and B22. The sub-sub group B21 was occupied by the plants of cultivar Gürbüz while the plants of rest of the varieties and lines fell into sub-sub group of B22. KeyWords: Lathyrus sativus, Morphological characters, Agricultural Characters, ISSR Markers