Seed Physical Characteristics of Plants in Seasonal Flooding Forest and Preliminary Test

Abstract

            The study of seed morphology of some plants in seasonal flooding forest, Nakhon Ratchasima Province was conducted using observing and collecting seed of 41 species. Seed traits, dry weight, and cut-test were recorded. Then preliminary seed germination was tested. The highest of dry weight was founded in Canavalia gladiata (Jacq.) DC. as 1.0163 grams, followed by Butea monosperma (Lam.) Kuntze) as 0.7651 grams and Cathormion umbellatum (Vahl) Kosterm.) as 0.3086 grams, respectively. Mean of width and length showed the highest value in Butea monosperma as 2.11:3.04 centimeters, followed by Canavalia ensiformis as 1.04:1.86 centimeters, and Cathormion umbellatum as 0.86:1.04 centimeters, respectively. Seeds were classified into 2 types, i.e., 39 species of orthodox and 2 species of recalcitrant. Butea monosperma revealed the highest of germination percentage as 89.33%, followed by Albizia procera (Roxb.) Benth.) as 46.67% and Combretum quadrangulare Kurz) as 42.00%, respectively. Whereas there were 4 species with 0.00% of germination percentage, i.e., Syzygium borneense (Miq.) Miq., Ludwigia hyssopifolia (G. Don) Exell, Persicaria pulchra (Blume) Soják, and Lepisanthes senegalensis (Poir.) Leenh.