浙江农业学报 ›› 2024, Vol. 36 ›› Issue (7): 1469-1480.DOI: 10.3969/j.issn.1004-1524.20231059

• 作物科学 • 上一篇    下一篇

高光效甘薯品种浙薯86的选育、产量与品质特征

沈升法(), 项超, 孟羽莎, 李兵, 吴列洪*()   

  1. 浙江省农业科学院 作物与核技术利用研究所,浙江 杭州 310021
  • 收稿日期:2023-09-07 出版日期:2024-07-25 发布日期:2024-08-05
  • 作者简介:沈升法(1969—),男,浙江富阳人,学士,副研究员,从事薯类育种与栽培研究。E-mail: 3398809937@qq.com
  • 通讯作者: *吴列洪,E-mail: zwsgsz@mail.zaas.cn
  • 基金资助:
    浙江省农业新品种选育重大科技专项(2021C02064-1);浙江省领雁计划(2022C02041);浙江省“三农九方”科技协作项目(2022SNJF008)

Breeding, yield and quality characteristics of Zheshu 86, a sweetpotato variety with high photosynthetic efficiency

SHEN Shengfa(), XIANG Chao, MENG Yusha, LI Bing, WU Liehong*()   

  1. Institute of Crops and Nuclear Technology Utilization, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, China
  • Received:2023-09-07 Online:2024-07-25 Published:2024-08-05

摘要:

塑造理想株型是实现作物产量突破和高光效育种的基础和重要途径。采用半直立、优质双亲——淀粉型品种浙薯20和食用型地方品种岳冬进行杂交选育,以理想株型、高产、优质为主要选择目标,育成高光效品种浙薯86。该品种具有理想株型的形态特征,短蔓,基部分枝数多,由较多的直立次生分枝构成半直立株型,垄上株高优势明显,形成较高的冠层空间,叶面积指数高,七裂中等深缺刻叶形,叶片较小而厚,上部叶茎叶夹角小,叶势上冲明显,单株结薯数较多,光合效率和经济系数高,表现出优良的早熟性和丰产性。在浙江省和长江中下游甘薯品种区试中,浙薯86每年的鲜薯产量均居所有参试品种之首,鲜薯、薯干和淀粉产量均比对照徐薯22增产30%左右。浙薯86的块根β-淀粉酶活性高,蒸熟后麦芽糖和可溶性糖含量高,食味优,淀粉率较高,且淀粉的峰值黏度、崩解值和回生值高,糊化温度低,适合用于鲜食、薯脯和淀粉加工。浙薯86适应性广,抗蔓割病,中抗黑斑病、根腐病、Ⅱ型薯瘟病,感茎线虫病、Ⅰ型薯瘟病和基腐病。综上,浙薯86是一个优质、高产、多用途的高光效甘薯品种,适宜在长江中下游地区种植,不宜在浙东南基腐病重疫区推广。

关键词: 甘薯, 高光效育种, 理想株型, 高产, 淀粉特性, 适应性

Abstract:

Shaping ideotype is the foundation and important way to achieve crop yield breakthroughs and high photosynthetic efficiency breeding. The sweetpotato parents with semi-erect and high quality, a starch variety Zheshu 20 and an edible local variety Yuedong, were used for cross-breeding, with ideotype, high yield and high quality as the main selection objectives, and the variety Zheshu 86 with high photosynthetic efficiency was bred. This variety had the morphological characteristics of an ideotype with short vines and a large number of base branches, forming a semi-erect plant type with more vertical secondary branches and a higher canopy space by the obvious advantages of plant height on ridge. Zheshu 86 had high leaf area index, medium depth split leaf shape with seven lobe, smaller and thick leaves, small stem-leaf angle of upper leaves, obvious leaf upthrust and more storage roots per plant. Based on the above advantages and characteristics, Zheshu 86 had higher photosynthetic efficiency and economic coefficient, and exhibited excellent early maturity and high yield. In the sweetpotato variety regional trials of Zhejiang Province and the Yangtze Plain, the annual yield of fresh storage root ranked first among all the tested varieties, with the yields of fresh storage root, dry storage root and starch increasing by about 30% compared with Xushu 22. The storage roots had high β-amylase activity, high content of maltose and soluble sugar after steaming, good taste, high starch content and good starch properties of high peak viscosity, high breakdown value and setback value, as well as low pasting temperature, so Zheshu 86 was suitable for fresh food, preserved potato, and starch processing. The variety had wide adaptability and was resistant to fusarium wilt, moderately resistant to black rot, root rot, and type Ⅱ bactrium wilt, and susceptible to stem nematode, type Ⅰ bactrium wilt, and foot rot. Zheshu 86 was a high quality, high yield and multi-purpose sweetpotato variety with high light efficiency, which was suitable for planting in Yangtze Plain areas, except for the severely affected areas of foot rot in southeastern Zhejiang.

Key words: sweetpotato, high photosynthetic efficiency breeding, ideotype, high yield, starch property, adaptability

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