The Initial Response Of Leaf Stomatal And Stem Vascular Bundle Of Wheat And Rice To Simulated Warming

Greenhouse effect causing global warming affecting agricultural production. Wheat and rice are two main food crops of North and South. Simulated warming impact of their stomata and vascular bundles may provide theoretical data for agricultural production. IT is great significance to two crops of wheat and rice production. In this study, as material of wheat and rice, through turns the soil, cover plant, full coverage, and other means to set three different heating mode, through studies in different simulation of wheat temperature way stomata and vascular bundle of rice effects for agricultural production in China, provide theoretical data to the wheat and rice production has the vital significance. Test to one conclusion:1. In the growing season throughout the wheat and rice, the highest soil temperature and the most low soil temperature of the complete coverage and coved the soil is higher than not cover, but the increase rate is a little; The highest soil temperature and the most low soil temperature of covered the plant is little change by the not cover. The highest temperature and the minimum temperature of the complete coverage and covered plant is increaser than not cover.2. Mantled plant is Beneficial to the occurrence of wheat flag leaf stomatal. Mantled soil is not conducive to the occurrence of wheat flag leaf stomatal. All mantled made stomatal density of wheat flag leaves was severely reduced.The upper epidermis's stomata length and width of different ways of mantled is greater than don't mantled, the outer epi all mantled dermis's stomata length and width of mantled soil,mantled plant is greater than don't mantled, the stomatal length and stomatal width of all mantled outer epidermis is less than unmantled.3. Different way of covered make the stem diameter of grain section, down a section, down two, down three of wheat increased, the medulla cavity area of grain section, down a section, down two, down three of mantled plant is the largest, but the wall/interaode is the minimum. The down a section, down two, down three of stem wall/internode of all mantled, mantled soil are bigger than don't mantled, but the down a section, down two, down three of stem wall/internode of mantled plant, are smaller than don't mantled.4. The dave bundle number of grain section, down a section, down two, down three of different way of covered are larger than don't mantled. The order of vascular bundle area sum of grain section is mantled plant> don't mantled> mantled soil> all mantled. The order of vascular bundle area sum of down a section is mantled soil> mantled plant> don't mantled> all mantled. The order of vascular bundle area sum of down two is mantled soil> don't mantled> all mantled> mantled plant. The order of vascular bundle area sum of down three is mantled soil> all mantled> don't mantled> mantled plant.5. Different way of covered make the stomata density of the sword leaf of rice have changed by the order of mantled plant> don't mantled> all mantled> mantled soil, the order of the upper epidermis's stomata length and width under the different way of covered is mantled soil> don't mantled> mantled plant> all mantled. The outer epidermis's stomata length of mantled plan,all mantled,mantled soil is bigger than don't mantled, the outer epidermis's stomata width of all mantled bigger than don't mantled, but the mantled plant, mantled soil is smaller than don't mantled.6. Different way of covered make the stem diameter of down a section, down two, down three of rice decreased, the stem diameter and medulla cavity area of down a section, down two, down three of all mantled is minimum. the stem diameter and medulla cavity area of mantled soil, mantled plant are increased or decreased. but the wall/internode of mantled soil is minimum.7. Dave bundle number, small vascular bundle number of down a section of all mantled, mantled soil, mantled plant are less than don't mantled, including mps minimum. The dave bundle number, small vascular bundle number of down two, down three of rice is mantled soil> don't mantled> mantled plant> all mantled. Vascular bundle area sum of down a section, down two, down three of all mantled, mantled soil, mantled plant are less than don't mantled.