溫度濕度對李授粉受精的影響.pdf

1、華中農(nóng)業(yè)大學(xué)碩士學(xué)位論文溫度濕度對李授粉受精的影響姓名：王吉明申請學(xué)位級別：碩士專業(yè)：果樹學(xué)指導(dǎo)教師：李國懷2002.5.1EffectoftemperatureandhumidityonplumpollinationandfertilizationAbstractPollenofplum‘Gulfruby’(PrunussalicinaLindlCVgulfruby)，Plum‘86—7’(n“H姍salicinaLindlCVplu

2、m86—7)and‘Naili’(尸r堋USsalicinaLindlvatcordataJYZhangeta1)wereusedtostudygerminatonofpollen，growthofpollentubeunderdifferenttemperatureFluorescencemicroscopictechnologywasusedtostudygerminationofplum‘Gulfruby’pollenonthes

3、tigma，pollentubeinthestyleandovulesenescenceunderdifferenttemperatureandhumidityThemainresultsaSfollowsITemperatureinfluencedvivopollenviabilityInthreeplumcultivars，thepercentageofgerminedpollenishighestfor‘gulfruby’andl

4、owestfor‘Naili’underdifferemoftemperatureAtlTCthepercentageofgerminedpollenis329％103％andlO1％for‘gulfruby’，‘plum86—7’and‘Naili’，respectivelyafterculturedfor4h2Athightemperature，thepercentageofthepollinatedflowerandnumbero

5、fpollenonthestigmaishigherthanatlowertemperatureThepercentageofpollinatedfloweris355％at17“C。or61at2“C，andnumberofpollengrainsonthestigmais32at17℃or5at2“Crespectivelyfornontreatedplum‘Gulfruby’comparedwithwaterspraytreate

6、dWaterspraytreatmentdecreasedthepercentageofpollinatedflowerandnumberofpollenonthestigmacomparenontreatmentfor‘Gulfruby’3Pollentubelengthinthestyleis332mm，287mm，169mm，O53mmat17℃，12“C，7“Cand2“12respectivelyatter24hsforhan

7、dpollinationEffectofwaterspraytreatmentongrowthofpollentubeWasrelatedtodifferenttemperaturespray—watertreatmentenhancedpollentubegrowthinthestyleat17“Candaffectedlittleat12“C，butinhibiteditat7“Cor2“C4Twoovulesinovaryshow

8、edphysiologicaldifferenceattwodaysafterbloom，oneofthemwouldbesenescedorunviablesoontheplumovulelongevitywasshortwhentemperatureincreased，butwatersprayduringflowerduringbloomcouldprolongitThelongestplumovulelongevitywas4d