不同水分处理下施用立收谷对马铃薯品质的影响  

Effects of Applying Diquat-Dibromide on Potato Quality under Different Watering Treatments

作　　者：庞敏昡 王瀚 李志涛 史宁帆 蒲转芳 张锋 姚攀锋[1] 毕真真 白江平[1] 孙超[1] Pang Minxuan;Wang Han;Li Zhitao;Shi Ningfan;Pu Zhuanfang;Zhang Feng;Yao Panfeng;Bi Zhenzhen;Bai Jiangping;Sun Chao(College of Agronomy,Gansu Agricultural University/State Key Laboratory of Aridland Crop Science/Gansu Key Laboratory of Crop Improvement&Germplasm Enhancement,Lanzhou 730070,Gansu,China)

机构地区：[1]甘肃农业大学农学院/省部共建干旱生境作物学国家重点实验室/甘肃省作物遗传改良与种质创新重点实验室,甘肃兰州730070

出　　处：《作物杂志》2024年第6期132-139,共8页Crops

基　　金：国家自然科学基金(32060502);甘肃省科技计划(21JR7RA804);国家现代农业产业技术体系(CARS-09-P10);省部共建干旱生境作物学国家重点实验室开放基金(GSCS-2022-Z01)。

摘　　要：为探究立收谷对正常浇水和干旱胁迫下不同贮藏期马铃薯品质的影响,选用3个抗旱性不同的马铃薯品种,采用盆栽控水法进行干旱胁迫。种植后50 d时进行干旱处理,于收获前10 d施用立收谷后进行测产。在25℃环境中贮藏,于0、30和60 d时测块茎产量及各营养品质、薯皮厚度及块茎硬度。结果表明,除品种陇薯6号在正常灌溉下施用立收谷后对产量有显著提升外,其他品种产量均无显著变化。但施用立收谷对不同品种马铃薯的块茎硬度和薯皮厚度均有显著提高,这对减轻机械化收获马铃薯和运输贮藏过程中产生的块茎物理损伤起重要作用。对所测指标进行主成分分析并采用隶属函数法进行综合评价,起主要作用的有3种主成分,累计贡献率达到85.544%,贡献最大的因子为块茎硬度、蛋白质、钙。且耐旱中间型陇薯6号综合评价最高,敏感型大西洋最低,说明立收谷对陇薯6号品质影响最大。In order to investigate the effect of applying Diquat-dibromide on potato quality under normal watering and drought stress,three potato varieties with different drought resistances were selected and pot water control method was used for drought stress.Drought stress treatment was applied 50 d after planting,and Diquat-dibromide was applied 10 d before harvest.Tuber yield,nutrient quality,skin thickness and tuber hardness were measured at 0,30 and 60 d after storage at 25℃.The results showed that the yield of Longshu 6 was significantly increased after Diquat-dibromide treatment under normal watering,while the yield of other varieties did not change significantly.However,applying Diquat-dibromide significantly increased the tuber hardness and skin thickness of different potato varieties,which could play an important role in reducing the physical damage of tubers caused by mechanical harvest,transportation and storage of potatoes.Principal component analysis and membership function method were used for comprehensive evaluation of the measured indexes,three principal components played the main role,with a cumulative contribution rate of 85.544%.The contribution of tuber hardness,protein and calcium was the largest.Drought-tolerant intermediate type Longshu 6 had the highest comprehensive evaluation,while-drought sensitive variety Atlantic was the lowest,indicating that applying Diquat-dibromide had the greatest impact on the quality of Longshu 6.

关 键 词：马铃薯块茎 干旱胁迫 立收谷 主成分分析 隶属函数法 

分 类 号：S532[农业科学—作物学]