CAJ | 학술논문

为研究喷灌和地面灌溉对小麦籽粒淀粉积累及其品质性状的影响，该文以中筋小麦百农矮抗58为试验材料，通过2012－2014年2个生长季的大田试验，以地面灌溉为对照，分析了喷灌对小麦籽粒淀粉及其组分积累过程、淀粉糊化特性等的影响。结果表明：1）与地面灌溉相比，喷灌显著提高了小麦总淀粉和支链淀粉的含量，降低了直链淀粉含量，进而降低了淀粉的直/支比；2）喷灌条件下小麦总淀粉和支链淀粉的积累量较地面灌溉分别显著提高了7.8%～8.0%和12.2%～12.5%（P＜0.05）；3）喷灌条件下小麦直链淀粉的积累量较地面灌溉显著降低了8.3%～11.4%（P＜0.05）；4） Logistics方程模拟淀粉积累过程表明，与地面灌溉相比，喷灌提高了小麦总淀粉和支链淀粉的最大积累速率、平均积累速率，但降低了直链淀粉的最大积累速率、平均积累速率；5）喷灌与地面灌溉条件下淀粉糊化特性表现出明显的不同：除糊化温度和糊化时间差异不显著外，喷灌小麦淀粉的高峰黏度、低谷黏度、稀懈值和最终黏度分别较地面灌溉提高了0.169～0.186、0.053～0.062、0.116～0.124和0.155～0.171 Pa·s（P＜0.05）。综上，与地面灌溉相比，喷灌有利于中筋小麦成熟期籽粒淀粉积累，并在一定程度上提高了中筋小麦淀粉品质。该研究可为小麦高产优质栽培提供理论依据。
위연구분관화지면관개대소맥자립정분적루급기품질성상적영향，해문이중근소맥백농왜항58위시험재료，통과2012－2014년2개생장계적대전시험，이지면관개위대조，분석료분관대소맥자립정분급기조분적루과정、정분호화특성등적영향。결과표명：1）여지면관개상비，분관현저제고료소맥총정분화지련정분적함량，강저료직련정분함량，진이강저료정분적직/지비；2）분관조건하소맥총정분화지련정분적적루량교지면관개분별현저제고료7.8%～8.0%화12.2%～12.5%（P＜0.05）；3）분관조건하소맥직련정분적적루량교지면관개현저강저료8.3%～11.4%（P＜0.05）；4） Logistics방정모의정분적루과정표명，여지면관개상비，분관제고료소맥총정분화지련정분적최대적루속솔、평균적루속솔，단강저료직련정분적최대적루속솔、평균적루속솔；5）분관여지면관개조건하정분호화특성표현출명현적불동：제호화온도화호화시간차이불현저외，분관소맥정분적고봉점도、저곡점도、희해치화최종점도분별교지면관개제고료0.169～0.186、0.053～0.062、0.116～0.124화0.155～0.171 Pa·s（P＜0.05）。종상，여지면관개상비，분관유리우중근소맥성숙기자립정분적루，병재일정정도상제고료중근소맥정분품질。해연구가위소맥고산우질재배제공이론의거。
Starch accumulation in wheat is a physiological process of transportation and conversion of photosynthetic assimilates into starch that determines grain yield and quality. The process of starch accumulation cannot only be affected by genetic factors, but also be regulated by environmental conditions. Sprinkler irrigation is one of the most advanced irrigation methods used worldwide and plays a vital role in wheat production in China. However, little is known about the starch accumulation characteristics and its quality variation of wheat grains under sprinkler irrigation. The objectives of this study were to quantify the difference between sprinkler irrigation and surface irrigation in starch accumulation and starch quality properties of wheat grains. In order to achieve the objectives, field experiments were conducted during 2012-2013 and 2013-2014 winter wheat growing seasons with medium-gluten wheat cultivar Bainong AK58 as a test material and surface irrigation as control. The experiment was carried out in Experimental Field of Henan Institute of Science and Technology (35°17'N, 113°56'E) located in Hongmen town of Xinxiang city, Henan, China. Content of starch and its component were determined according to the method of double-wave length. Starch pasting properties were measured by using the Rapid Visco Analyser. The accumulation courses of total starch, amylose and amylopectin were simulated by Logistics equation and then characteristic parameters of the curves were calculated.The results showed that: 1) Compared with surface irrigation, sprinkler irrigation improved the total starch content and the content of amylopectin in wheat grains, and decreased the amylase content and amylose/amylopectin ratio; 2)The accumulated total starch content and amylopectin content each grain under sprinkler irrigation were significantly increased by 7.8%-8.0% and 12.2%-12.5% (P<0.05); 3)The accumulated amylose content each grain under sprinkler irrigation was significantly decreased by 8.3%-11.4%(P<0.05); 4) The accumulation courses of starch could be well fitted to the logistic equations by relating starch contents against days after anthesis withR2of 0.995-0.999 (P<0.05); Logistic simulation revealed that the higher total starch and amylopectin accumulation in a single grain under sprinkler irrigation resulted from the higher maximum and average accumulation rate while the lower amylose accumulation in a single grain under sprinkler irrigation resulted from the smaller maximum and average accumulation rate; 5) Compared with surface irrigation, the peak of viscosity, through viscosity, breakdown value and final viscosity of wheat flour under sprinkler irrigation were increased (P<0.05) by 0.169-0.186, 0.053-0.062, 0.116-0.124 and 0.155-0.171 Pa·s, respectively; However sprinkler irrigation had no significant effect on the pasting time and pasting temperature of wheat flour. The results suggested that sprinkler irrigation improved starch accumulation and starch quality of medium-gluten wheat grain. This study may provide valuable information for the high-yield and good-quality cultivation of winter wheat.