Relationship between seedling grade and plant growth, yield and quality of medicinal Chrysanthemum morifolium / 中国中药杂志

<p><b>OBJECTIVE</b>To provide the basis for standardization cultivation of medicinal Chrysanthemum morifolium, the relationship between the seedling grading and plant growth, yield and quality were studied.</p><p><b>METHOD</b>The morphological index of the seedlings was measured and the method of principal component and correlation analysis were used to determine the grading index, and step-wise cluster analysis was applied for clustering analysis. Pot experiments were used to measure the indicators of plant growth and development, yield and quality.</p><p><b>RESULT</b>The height and ground diameter were determined for the quality indicators of the seedlings grading, and the standard quality grading of seedlings of Ch. morifolium was initially set up. The ground diameter of the class I and II were larger than that of the class III, and the number of branches of class I and II was more than that of the class III, on the contrary, the plant height of the class III was higher than that of the class I and II. The shape and appearance of the plant had no effect on the intrinsic quality. Flower center diameter and tubular floret number of the class I and II were significantly larger than those of the class III, so as the yield. The seedling grading had no obvious effect on the internal quality of medicinal material.</p><p><b>CONCLUSION</b>Seedlings of the class I and class II were suitable for transplanting.</p>

Rapid identification system for seedlings of medicinal Chrysanthemum morifolium / 中国中药杂志

<p><b>OBJECTIVE</b>To achieve the rapid identification for seedlings of medicinal Chrysanthemum morifolium, the discriminant equation was established and the software for rapid identification was designed.</p><p><b>METHOD</b>Leaf structure of medicinal Chrysanthemum of 12 cultivars was analyzed to establish the discriminant equation based on variance analysis and discriminant analysis. On this basis, the identification program and software (based on the python language) were designed.</p><p><b>RESULT</b>Through the analysis of variance and multiple comparisons for the 11 leaf parameter index data of 12 different cultivars, it was found that that the leaf parameters were significant different from each other and reached significant levels. The discriminant equation and the rapid identification software were set up based on the analysis of various indicators.</p><p><b>CONCLUSION</b>The rapid identification system of seedlings of medicinal Chrysanthemum could be achieved through the establishment of discriminant equation combined with computer technology.</p>

Numerical analysis of morphological variation of germplasm resources of Chrysanthemum morifolium for medicine / 中国中药杂志

<p><b>OBJECTIVE</b>Botanical characters of germplasm resources of Chrysanthemum morifolium for medicine were observed and compared, which could offer reference for its genetic improvement and germplasm resources protection.</p><p><b>METHOD</b>Based on the random blocks field experiments design, twenty-six morphological traits were observed. The morphological differences among germplasm resources were compared by principal component analysis and cluster analysis.</p><p><b>RESULT</b>The coefficient of variation values for 17 of 26 traits indicated a high level of variation (above 20%). Six principal components which accounted for 77.14% of total variance were extracted from the principal component analysis. The 29 germplasm resources could be divided into two clusters.</p><p><b>CONCLUSION</b>There were large morphological variation among germplasm resources on Ch. morifolium for medicine.</p>