水稻與陸稻的耐旱性及產(chǎn)量潛力的研究.pdf

1、Y904085單位代碼：10335研究生學(xué)號：Z0305005水稻與陸稻的耐旱性及產(chǎn)量潛力的研究StudyOHthedroughttoleranceandyieldpotentialinpaddyanduplandrice論文評闊人：金千瑜研究員石春海教授蔣立希教授答辯委員會主席：趙偉明推廣研究員答辯委員會成員：周偉軍教授陳進(jìn)紅副教授鄔飛波教授張國平教授論文答辯時間：2006年5月20日浙江人學(xué)農(nóng)業(yè)推廣碩【：學(xué)位論文AbstraetIn

2、thecurrentresearch，uplandvarieties，andindicaandjaponicapaddyricevarieties，hybridricecombinationsanddoublehaploidlines(uplandricepaddyrice)wereusedandplantedunderthreeirrigationways，ieconventional(submergence)，alterantive

3、andrain—feededirrigations，tostudytheperformaceoftheiragronomictraitsThemainresultsareasfollows：1，TherewasnoobviousdifferenceingrainyieldbetweensubmergenceandrainfedirrigationsforuplandriceOnthewholetheyieldofuplandricewa

4、slowerthanpaddyriceLi148Nuo，avarietyderivedfromcrossofpaddyanduplandricevareities，expressedthehighestyieldanddroughttoleranceIntermsofyieldcomponents，Li148Nuoischaracterizedbystrongertilleringabilityandmoreproductivetill

5、ers，higherandmorestablegrainsettingpercentageandratioofgrain／strawItmaybeassumedthatthegenotypescarriedthesd1gene2，Theindicaricegenerallyshowedhigheryieldpotentialanddroughttolerance，incomparisonwithjaponicariceThegenoty

6、peswithhighdroughttolerance，suchasKe22Xuanwereidentifiedfrompaddyricegerplasm，whichhadthesalnetoleranceasuplandricedidCompaerdwithconventionalvarieties，hybridricehadbetteryieldandhigherdroughttolerance，indicatingheterosi

7、sinstresstoleranceexceptinyieldpotenialUndertheconditionofrainfedpaddyfield，itcouldbepossibletoidentifythegenotypeswithhigherdroughttolerance3，ADH(doublehaploid)populationlinesweredevelopedthroughanthercultureofF1between

8、auplandrice(IRAT359)andwithapaddyrice(T461)，and23DHlineswerechoosedrandomlyforusinginstudyingtheperforamceofagronomictraitsundertheeirrigationwaysItwasfoundthattheyieldofmostlinesrangedbetweenthetwoparents，whileafewlineh

9、adloweryieldInaddition，therewerefourlines，ieW29，W31，W34andW29，whichshowedthehighandstableyieldsinallirrigationmethods，beinghigherthanuplandriceIRAT359Basedonanalysisofthepresentresultsandwiththeobjectiveofearringoutwater

10、savingriceproductioninsouthernChina，thericevarietybeingusedinuplandandpaddyfieldsshouldbeemphasizedThusthefolloingissuesshouldbeconsidered：(a)toimprovetheyieldpotentialofuplandricethroughenhancingtilleringability；(b)tofo