Campanulaceae Reproductive Biology Research

Self-pollination burines rate is low can give the platicodon grandiflorum heredity ruleresearch, breeding of better stocks as well as idioplasm resources aspect the and so onpreservation practice brings very many difficulties. Through after blossoms theplaticodon grandiflorum female, the stamen growth advancement observation and thepollen vigor determination, the discussion platicodon grandiflorum self-pollinationburines rate low reason and the enhancement self-pollination burines rate method resultindicated under the natural state that: The platicodon grandiflorum flower's chapiter canaccept from colored and the different flower's pollen but normal solid, createsself-pollination burines rate low reason mainly is identical flower's female, the stamengrowth time is different, through the pollen artificial preservation, the artificial pollinationmethod may solve self-pollination burines rate low problem. Provides the testing methodand the basis for platicodon grandiflorum's heredity rule research and the breedingpractice.At present, in the market sells the commodity platicodon grandiflorum seedthousand grain of quality, the maturity and the germination percentage universal are low,it seriously is restricting platicodon grandiflorum's output and the quality. According tothe above, blossoms the seed mature tendency after the platicodon grandiflorum and itscarries on the analysis with the meteorological element relations, finally indicated: Mustbe completely mature in this local platicodon grandiflorum seed, from blossomscalculated needs 55 day above the time, the platicodon grandiflorum blossoms the latter31-35 day is the platicodon grandiflorum thousand grain of quality and the maturity ratesof rise quickest time. Can satisfy the platicodon grandiflorum growth and the growth inthe natural condition needs the condition under the premise, after blossoms the seedmature advancement mainly to control by own developmental mechanism, themeteorological condition cannot remarkably affect the platicodon grandiflorum seed themature advancement, but the seed mature period temperature affects the seedthousand grain of quality in the certain degree.The platicodon grandiflorum seed maturity and the germination percentage relationsanalysis result indicated that, The seed maturity approximately is when 48.8% starts theindividual seed to have the germinative capacity, the germination percentage enhancesalong with the maturity enhancement. Although the maturity achieved approximately63.4% starts, the final germination percentage all can achieve above 80%, but thegermination tendency has the obvious difference.The platicodon grandiflorum seed maturity, germinates the time and the rate ofseedlings emergence relations analysis result which needs indicated that, The seedmaturely goes past high, germinates needs the time short, also the seed rate ofseedlings emergence is higher, vice versa. In the maturity same seed, germinates needsthe time long, the rate of seedlings emergence is lower; In germinates needs in the timesame seed, maturely goes past lowly, the rate of seedlings emergence is also lower.Looked from this test result that, the maturity is 80% below seed and germinates needsabove number of days 7 day the seed, seriously affects the rate of seedlings emergence.The platicodon grandiflorum seed maturity, germinates the time and the seedlingquality relations analysis result which needs indicated that, The seed maturity and the seed germinates the number of days which needs to be able to affect the seedlingquality, but germinates in the maturity in 80% above seed needs the number of days tobe bigger than the maturity to the seedling quality influence to the seedling qualityinfluence. The maturity 80% below seed and germinate needs above number of days 7day the seed similarly serious influence seedling stage growth. Therefore suggested;The maturity good seed expedite budding time do not have to surpass 7 day, theexpedite budding starts latter 7 day up to the seed which does not germinate, thoughtthe method screens.Indicated with 0.3% potassium permanganate processing different maturity seed'sresult that, 0.3% potassium permanganate process to the different maturity seed effectdifferent, to the maturity good, germinates needs the time short seed, has the functionwhich reduces or postpones germinates, to the maturity difference, germinates needsthe time long seed, 0.3% potassium permanganate promotion seed germinates thefunction is very obvious.