当前位置: X-MOL 学术Field Crops Res. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Reducing nitrogen rate and increasing plant density benefit processing quality by modifying the spatial distribution of protein bodies and gluten proteins in endosperm of a soft wheat cultivar
Field Crops Research ( IF 5.8 ) Pub Date : 2020-08-01 , DOI: 10.1016/j.fcr.2020.107831
Baoqiang Zheng , Qian Fang , Chenxu Zhang , Hemat Mahmood , Qin Zhou , Wenyang Li , Xiangnan Li , Jian Cai , Xiao Wang , Yingxin Zhong , Mei Huang , Weixing Cao , Tingbo Dai , Dong Jiang

Abstract To explore the potential ways for promoting biscuit-making quality of soft wheat, a field experiment was conducted to investigate the spatial distribution of protein bodies (PBs), gluten protein and processing quality in response to reducing nitrogen (N) rate and increasing plant density. A two-way factorial trial with three N rates (180, 120 and 0 kg ha−1) and three plant densities (180 × 104, 240 × 104 and 300 × 104 plants ha−1) was applied. The mature grains were milled into seven pearling fractions from the outermost to the innermost caryopses, denoted by P1–P7. An inward decreasing trend was found in Zeleny sedimentation volume (ZSV) of fractions from the outer (P3) to inner endosperm layer (P7). Reducing N rate and increasing plant density both improved the processing quality of all pearling fractions. Moreover, reducing N rate showed a more remarkable effect on protein quality traits than increasing plant density, and their interaction effect was significant. The decrement in ZSV was most likely ascribed to the spatial variations in gluten proteins and glutenin macropolymers (GMPs). The accumulation and aggregation of PBs in caryopses were significantly declined by reducing N rate and increasing plant density. In addition, the protein quality traits in outer endosperm showed the largest variation, followed by that in middle and inner endosperm under various N rate and plant density. Thus, the combination of reducing N rate and increasing plant density might be a practical management approach for promoting biscuit-making quality in soft wheat.

中文翻译:

通过改变软小麦品种胚乳中蛋白体和面筋蛋白的空间分布来降低氮肥率和增加植物密度有利于加工质量

摘要 为探索提高软质小麦饼干制作品质的潜在途径,通过田间试验,研究蛋白质体(PBs)、面筋蛋白和加工品质对降低氮(N)率和增加植株的响应的空间分布。密度。应用了三个 N 比率(180、120 和 0 kg ha-1)和三个植物密度(180 × 104、240 × 104 和 300 × 104 植物 ha-1)的双向析因试验。成熟的谷物从最外层到最内层的果核被研磨成七个珠光部分,用 P1-P7 表示。在从外层 (P3) 到内胚乳层 (P7) 的部分的 Zeleny 沉降体积 (ZSV) 中发现了向内减少的趋势。降低氮肥率和增加植物密度都提高了所有珠光部分的加工质量。而且,与增加植株密度相比,降低施氮量对蛋白质品质性状的影响更为显着,且二者互作效应显着。ZSV 的减少很可能归因于麸质蛋白和谷蛋白大分子聚合物 (GMPs) 的空间变化。降低施氮量和增加植株密度可显着降低果核中PBs的积累和聚集。此外,在不同施氮量和植株密度下,外胚乳的蛋白质品质性状变异最大,其次是中胚乳和内胚乳。因此,降低施氮量和增加植株密度相结合可能是提高软小麦饼干制作质量的实用管理方法。且它们的交互作用显着。ZSV 的减少很可能归因于麸质蛋白和谷蛋白大分子聚合物 (GMPs) 的空间变化。降低施氮量和增加植株密度可显着降低果核中PBs的积累和聚集。此外,在不同施氮量和植株密度下,外胚乳的蛋白质品质性状变异最大,其次是中胚乳和内胚乳。因此,降低施氮量和增加植株密度相结合可能是提高软小麦饼干制作质量的实用管理方法。且它们的交互作用显着。ZSV 的减少很可能归因于麸质蛋白和谷蛋白大分子聚合物 (GMPs) 的空间变化。降低施氮量和增加植株密度可显着降低果核中PBs的积累和聚集。此外,在不同施氮量和植株密度下,外胚乳的蛋白质品质性状变异最大,其次是中胚乳和内胚乳。因此,降低施氮量和增加植株密度相结合可能是提高软小麦饼干制作质量的实用管理方法。降低施氮量和增加植株密度可显着降低果核中PBs的积累和聚集。此外,在不同施氮量和植株密度下,外胚乳的蛋白质品质性状变异最大,其次是中胚乳和内胚乳。因此,降低施氮量和增加植株密度相结合可能是提高软小麦饼干制作质量的实用管理方法。降低施氮量和增加植株密度可显着降低果核中PBs的积累和聚集。此外,在不同施氮量和植株密度下,外胚乳的蛋白质品质性状变异最大,其次是中胚乳和内胚乳。因此,降低施氮量和增加植株密度相结合可能是提高软小麦饼干制作质量的实用管理方法。
更新日期:2020-08-01
down
wechat
bug