Variation in seed quality seed parameters of teak clones (Tectona grandis L. F.)

In the present study, various qualitative and quantitative fruit traits were studied from seed lots collected from 18 clones located at teak clonal seed orchard of Wada, Thane. Variation in qualitative fruit traits was recorded among the selected 18 clones. Among these clones, 13 clones showed high level of hairiness on fruit wall and 10 clones showed fruit splitting characteristics. Interestingly, 12 clones showed loose type of calyx with high density hairiness. There was a significant variation in fruit diameter, fruit length, fruit weight, number of seeds per fruit, thickness of mesocarp and endocarp among clones. Clones such as MHAL-P1, MHAL-P2 and MHAL-P4 showed good seed filling having 4 seeds/fruit. Seed parameters studied were subjected to divergence analysis and result showed that all the 18 clones were grouped into 4 clusters. The cluster group 1 was observed of having maximum number of 13 clones, which are closely related with each other. 3 clones viz. MHAL-A5, MHAL-P4 and MHAL-P6 were comparatively less related and were grouped in cluster 2, whereas, clone MHAL-P2 was observed to have maximum of cluster distance were grouped in 2 separate clusters i.e. 3 and 4.