Dynamic accumulations of bioactive components in different germplasm Isatis indigotica and comparative of its quality of medical material / 中国中药杂志

<p><b>OBJECTIVE</b>To study the dynamic accumulations of bioactive components in different germplasm Isatis indigotica and compare its quality of medical material, in order to provide a basis for breeding and high yield cultivation of I. indigotica.</p><p><b>METHOD</b>The planting samples were collected during growth period, bioactive components in different germplasm Isatis indigotica were measured.</p><p><b>RESULT</b>The dynamic accumulations of bioactive components in different germplasm I. indigotica were consistently changed in a field experiment. The differences of bioactive components contents in medical material of I. indigotica were significant.</p><p><b>CONCLUSION</b>The germplasm from Gansu Longxi showed a high yield and good quality characters in Fuyang area, and may be applied to production.</p>

Contrast of growth characteristics of different germplasm and correlation between morphologic and individual yield of Isatis indigotica / 中国中药杂志

<p><b>OBJECTIVE</b>To study the growth characteristics of different germplasm and analyze the correlation between morphologic and individual yield of Isatis indigotica.</p><p><b>METHOD</b>The planting samples were collected during the growth period, morphological characteristics and root yield per plant in 13 germplasm of I. indigotica from all over the country were determined by correlation and path analysis.</p><p><b>RESULT</b>The growth characteristics of various I. indigotica germplasm were consistent. The difference of morphological characteristics and root yield with various germplasm were significant. The root yield per plant was positively correlated to the main root length and the number of individual plant leaves.</p><p><b>CONCLUSION</b>The number of leaves per plant and root length are selected for high-yield lines, meanwhile, leaf length and leaf diameter are important factors for breeding high-yield lines as well.</p>

Effects of sowing date on morphologic characteristics, yield and quality of Radix isatidis / 中国中药杂志

<p><b>OBJECTIVE</b>To study the effects of sowing date on morphologic characteristics, yield and quality of Radix Isatidis, in order to provide a basis for selection of the suitable sowing date.</p><p><b>METHOD</b>The experiment was carried out in a randomized complete block design arranged in split plot, the phonological period of Isatis indigotica was investigated and the morphological indexes, yield and quality at harvest were measured and determined by correlation and variance analysis.</p><p><b>RESULT</b>The different sowing dates showed a great effect on phonological period of I. indigotica. The biological characteristics, yield and active components of Radix Isatidis were negatively correlated with the sowing date, and the difference of morphological characteristics, yield and active compositions with sowing date was significant.</p><p><b>CONCLUSION</b>The suitable sowing date of I. indigotica was during the period of time from late March to beginning of the April in Fuyang area, and considering the factors of rational rotation, the time cloud delayed until late May to the beginning of June.</p>