Study On Local Variety Resources Paddy Rice Quality In Taihu Lake Basin

This experiment through the paddy rice quality and the RVA profile carry on the determination and the analysis to Tai Lake area agricultural department collection 859 local variety resources (Japonica rice, glutinous rice and Indica rice), systematically studies the paddy rice quality characteristic which the Tai Lake area place plants, has analyzed different isothermia light, different cultivation paddy rice quality characteristic, has discussed in the paddy rice quality correlational dependence, and if the paddy rice quality character relations has done the preliminary study to the different kind of archery target adult plant character, key on the Tai Lake basin late Japonica rice adult plant character, the paddy rice quality heredity diversity has carried on the appraisal, and screens has the outstanding quality character the idioplasm resources, Main result as follows.-1.Different type idioplasm resources paddy rice adult plant character and paddy rice quality character overall outlineThe birth characteristic, adult plant shape, ear of character of idioplasm resources agronomic characters have the extremely remarkable difference, like weight of a thousand seeds change in 19.67-40.9g, in 18 kind of hull color by brown yellow variety most, in 9 kind of awn colors are most by the achromatic color. Indicated after the determination result that, the idioplasm resources material processing quality is superior, the japonica rice, Indica rice, glutinous rice's head milled rice rate reaches GB high quality rice level of standards, the success rate respectively is 68.56%, 59.59%, 68.04%. The appearance quality then misses, the japonica rice, the chalkiness rate and degree of the Indica rice is equally 6.74%, 20.06%. The japonica rice, the Indica rice amylose content average 18.24%, 22.89%, the change range respectively reaches 13.9%, 10.9%. The different idioplasm type paddy rice RVA profile characteristic differentiation phenomenon is more obvious.2. The different analysis of Different cultivation type variety paddy rice qualityThe findings indicated that, japonica rice, Indica rice and glutinous rice different ecology cultivation class group quality has the certain difference, Japonica rice performance for lengthens the tendency characteristic along with the birth which the processing, the appearancequality enhances, namely head milled rice rate by late Japonica rice highest, late ripe middle japonica rice and middle ripe early japonica rice is next, the early ripe middle japonica rice is low, chalkiness degree presents for the late ripe late japonica rice late ripe early Indica rice >middle ripe early Indica rice> the early ripe early Indica rice tendency. The difference tendency of the head milled rice rate of different type glutinous rice and the Japonica rice are similar.3. The class group differentiation in starch viscosity profile (RVA profile) characteristic of Japonica rice, glutinous rice and Indica riceThe different phenomenon extremely is also obvious of an identical idioplasm type paddy rice RVA profile characteristic.The findings indicated that, the Japonica rice RVA profile characteristic is the concurrently Indica rice nature with the glutinous RVA profile characteristic continuously change body, assumes 5 kind of characteristics class groups, the few idioplasms (for example dahongdao ) has the glutinous starch RVA profile characteristic, also has some idioplasms (for example ligengqing) for the starch RVA profile characteristic of Indica rice, the partial idioplasms have the high quality RVA profile characteristic, namely setback for the negative value (for example yao'aizi), the overwhelming majority idioplasm RVA profile characteristic (approx...