Study On Physiological Characteristics Of Different Temperature Typical Wheat's Hybrid Progeny

This experiment to use to select by examinations community temperature, yield, stub type, leafs type, physiology form etc. have representative typical model species (department) as germplasm install miscellaneous to hand over to combine miscellaneous the canopy temperature, leaf function period, chlorophyll that hand over the posterity F1, F2 contains the deal, protein nitrogen contains the deaK CAT\ MDA, net photosynthesis rate to prognosticate with analyze. The main results as follow:(1) After the cold type wheat hybrid with the warm type wheat there is a lower temperaturethan warm type wheat in total trend in mean temperature in community in one after one generation. Appear the probability that low temperature material want to be big in the FI of the cold type wheat, particularly after the filling starches period, this kind of difference is more obvious.(2) There is a great different between parents that using the cold type wheat and the warmtype wheat in progress in decrepitude ,with cold type wheat is close origin in the filling starching period with the cold type wheat more, the function period of each leaf is all long, and lower with leafs, function period horten to be more obvious than worm type wheat for slowing.(3) Regard cold type wheat as the close foliar chlorophyll in the flag leaf of miscellaneously hybrid progeny, whether is in FI or in F2, the chlorophyll resolves slow-moving, the chlorophyll contains declines to solve the rate lower, chlorophyll stability time is long, But regard warm type wheat as close origin, its miscellaneous hybrid progeny, flag leafs chlorophyll resolves more quickly, the chlorophyll declines to solve the rate higher, chlorophyll stability time is short.(4) The cold type wheat makes the mother or this to make the father, the contains ofprotein nitrogen of FI and Fa all express opposite in with warm type wheat is close origin advantage. Especially after the filling starches the period is more obvious.(5) The difference regard the warm type wheat and the cold type wheat as the mother this,although the activity of CAT of FI in the early filling starch period is not very, there has been an bigger advantage of activity in the cold type wheat from the fillingmiddle period to the filling last period, regarding cold type wheat as the mother its FI all expressed the well than the warm type wheat. This kind of trend too presents in the Fa. While making the father this, whether is the Fj or p2 the activity of CAT of the cold type wheat's posterity is stronger.(6) When the contains of MDA of the flag leaf begin to rises from the filling starch early,cold type wheat make close origin, its FI and ? have got the obvious difference: The contains of MDA of the cold type wheat posterity slowly ascend, but the warm type wheat posterity runs high more quickly.(7) Making with the cold type wheat as parents, the velocity in the net photosynthesis ratein whole filling period of crossing descendents all is higher than use warm type wheat as the parent installs equally miscellaneous to hand over the posterity.