| Guangdong Province, sweet, waxy corn rapid development，sweet corn has becomeparticularly important for efficient crops and specialty industries.Crop area is theidentification of new crop varieties test high yield, stable yield, adaptability, resistancequality and an important means of value is the basis for species identification, but also thevariety can enter the key field production.This study of Guangdong Province in2010-2012sweet glutinous corn varieties tested regional trial data were compared to fresh corn on thebreeding of raising the level of production levels and promote the industrialization processand to provide a frame of reference, the study has the following main conclusions:(1)2010-2012three-year total of26regional trial tested combination of waxy corn,sweet corn38combinations tested, so far, of which14and12waxy corn sweet cornportfolio has passed Guangdong Province Variety Approval Committee. Breeding unitswere from Guangdong, Hainan, Hubei, Sichuan, Hebei, Beijing and other provinces,including research institutes, universities and seed enterprises.(2) By2010-2012waxy maize regional trial tested a total of26combinations yieldstability analysis showed that seed yield than the control were significant differencesbetween the tested combination accounted for85%(22), highly significant differences inaccounting69%of the tested combinations (18), were tested seed production in the lowperformance of the portfolio. Species tested combinations yield than the control range of1.01%-32.22%, output test points in different regions of the coefficient of variation of1.66%-11.82%in between.38sweet corns tested combinations than the control variety yield significantdifferences accounted tested combination68%(26), reaching a very significant differenceaccounted tested combination45%(17), the control seed production in the testedcombinations performance in high yield control to play the role of screening. Speciestested combinations yield than the control range of0.77%-20.66%, output test points indifferent regions of the coefficient of variation of0.49%-19.55%in between.(3) According to sheath blight, each test point, and Guangdong Academy of Agricultural Sciences for each combination sheath blight, stem rot and large and small spotfield investigation and sheath blight, leaf blight inoculation. Show that GuangdongProvince waxy maize regional trial tested a combination of84.62%combinations on theperformance of high resistance to stalk rot,61.5%of the combined performance of sheathblight resistance or more, including large and small spot disease incidence of the mostserious; inoculation conditions next, sheath blight disease more serious. Testedcombination of sweet corn,65.8%versus the performance of stalk rot resistant or more,15.8%more resistant sheath blight manifestations, there are55.3%for large and smallplaques manifestations of anti-or more, including the incidence of sheath blight the mostserious; inoculation, the sheath blight and leaf blight resistance over most of theperformance, sheath blight disease incidence and small spot close to the performance levelof the Guangdong hot and humid climates may be caused by more serious sweet cornsheath blight causes.(4) For fresh sweet, waxy corn quality analysis showed that: participants sweet, waxycorn commodity rates are low quality one ear, yet to be further improved, in particular forthe processing or packaging of fresh ear. Soluble sugar content of sweet corn are requiredto achieve high sweet that sweetness is better; mostly in thin pericarp thickness or less.Waxy corn amylose have reached the two requirements above, indicating that the stickywaxy better; pericarp thickness majority are below average. Sweet, waxy corn tastepalatability score90points or more experts are less. Waxy corn in the future should be themain attention pomace degrees, creamy flavor and other quality traits and degree; sweetcorn in the future should be the main attention pomace degrees, crisp flavor, etc. degreeand quality traits.(5) Tested combinations for comprehensive analysis showed that the main traits: waxymaize reference portfolio mix more than70%in the reproductive period and ear length, eardiameter, grains per panicle traits such as higher than the control species;80%combined ina single bud fresh weight, single spike weight, grain weight per panicle traits rarely higherthan the control species. Sweet corn were kind YUETIAN the16th in the reproductiveperiod, agronomic traits, such as ear traits has demonstrated a strong advantage than mostof the tested combinations. That were kind of sweet corn Regional Trial choose more appropriate and more stable production performance, played a role in the control species,but were kind of waxy maize regional trial in lower yields and disease resistance occuryearly degradation, control is not obvious, urgent need to replace.(6) For2010-2012years3years fresh sweet, waxy corn disease resistance and yieldand quality of the relevant correlation analysis showed that the sheath blight on Sweet andWaxy Maize larger than the small spot disease. Rhizoctonia leaf blight disease and an earof sweet corn, waxy corn rate impact than on the impact of large, sheath blight diseaseindex and sweet corn ear rate showed a significant negative correlation (-0.3137*). Leafblight and sheath blight disease of sweet, waxy corn pericarp thickness correlations werenot significant. Small spot disease index and waxy corn tasting score was a significantnegative correlation (-0.4222**), and sweet corn was a significant negative correlation(-0.2777*); sheath blight disease index and waxy corn tasting score was significantlynegatively correlation (-0.3577*), and sweet corn were not significantly negativelycorrelated.(7) For2010-2012years3years tested combination of fresh sweet corn yield andyield related factors related to the correlation analysis showed that among growth period,plant height, ear height, stem diameter, ear length, ear diameter, grain number, a singlebud fresh weight, single spike weight, grain weight per panicle was fresh highly significantpositive correlation. And ear length, rows per ear, grain number and fresh weight of singlebud direct path coefficients were0.11,-0.26,0.16and0.81. Waxy maize yield testedcombinations and yield factors related correlation analysis showed that plant height, earheight, stem diameter, ear length, ear diameter, single bud fresh weight, single spike weight,fresh grains per panicle weight, grain weight showed a significant positive correlation. Andplant height, ear length, ear diameter, bald long, single bud fresh weight, the seed ratedirect path coefficients were0.238,0.205,0.275,0.147,1.192and0.115; including ear lengthand single bud fresh weight of sweet, fresh Spike yield have a significant impact, directpath coefficient is large, play a decisive role. |
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