Quality Grading Standard of Malania oleifera Seedlings
Quality grading standards for Malania oleifera seedlings in line with the actual production needs is formulated,which can provide reference for M.oleifera seedling breeding and standardized production.20 batches of M.oleifera seedlings were randomly selected from the main production area of M.oleifera in Funing County,Yunnan Province.11 indicators were measured,including fresh weight,plant height,leaf number,leaf length,leaf width,ground diameter,main root length,main root diameter,lateral root number,chlorophyll content,and nitrogen content.The data were analyzed by using principal component and K-value clustering analysis,and then combined with actual production to determine the grading standards of M.oleifera seedlings.M.oleifera seedlings were divided into three levels with determining plant height,main root length,and ground diameter as the grading standards.Grade Ⅰ seedlings:plant height≥33.33 cm,main root length≥8.00 cm,ground diameter≥0.23 mm;Grade Ⅱ seedlings:33.33 cm>plant height≥27.77 cm,8.00 cm>main root length≥7.90 cm,0.23 mm>ground diameter≥0.21 mm;Grade Ⅲ seedlings:27.77 cm>plant height≥21.29 cm,7.90 cm>main root length≥6.41 cm,0.21 mm>ground diameter≥0.19 mm.In this study,the formulation of quality standards for seedlings is coincident with actual production and can provide a theoretical basis for the production of M.oleifera seedlings.
万方数据
维普
