‘ND Twilight’ (Reg. no. CV‐332, PI 693268; PVP‐202000258) is a new black bean (Phaseolus vulgaris L.) cultivar developed by the Dry Edible Bean Breeding Program at North Dakota State University and released by the North Dakota Agricultural Experiment Station. ND Twilight was developed using a modified pedigree method (F₁–F₅), followed by pure line selection based on agronomic, disease, and quality traits, along with specific DNA markers. With ∼24% of the total dry bean production in the United States, black bean is the second most important market class after pinto. Accounting for ∼35% of the total production, North Dakota is the largest producer of dry bean in the United States. However, both biotic and abiotic stresses are the main factors responsible for seed yield reductions. Between 2014 and 2019, ND Twilight was tested across more than 21 environments in North Dakota, where seed yield was significantly different from ‘Zorro’ and similar to ‘Eclipse’ and ‘Loreto’. ND Twilight is resistant to the most common race (20‐3) of the bean rust pathogen and Bean common mosaic virus. It also has intermediate resistance to common bacterial blight and to soybean cyst nematode (HG Type 0). ND Twilight has desirable upright architecture (Type IIa). Under North Dakota conditions, ND Twilight shows an average plant height of 49 cm, has a 100‐seed weight of 19.7 g, and matures in ∼99 d. Canning quality was rated as acceptable. Other traits of agronomic and economic importance are within acceptable commercial ranges.

中文翻译：

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一种抗豆锈的新黑豆：“ ND Twilight”注册

“ ND Twilight”（注册号CV-332，PI 693268； PVP-202000258）是由北达科他州立大学的干食用豆育种计划开发并由北方发布的一种新黑豆（菜豆）品种。达科他州农业实验站。ND Twilight是使用改良的系谱方法（F ₁ –F ₅），然后根据农艺，疾病和品质性状以及特定的DNA标记进行纯系选择。黑豆占美国干豆总产量的24％，是仅次于平托的第二重要市场。北达科他州约占总产量的35％，是美国最大的干豆生产国。但是，生物胁迫和非生物胁迫都是造成种子减产的主要因素。在2014年至2019年之间，ND Twilight在北达科他州的21个以上环境中进行了测试，其种子产量与'Zorro'明显不同，并且与'Eclipse'和'Loreto'类似。ND Twilight对豆锈病病原体和Bean普通花叶病毒最常见的种族（20-3）具有抵抗力。它对普通细菌枯萎病和大豆孢囊线虫（HG类型0）也具有中等抗性。ND暮光具有理想的直立式建筑（IIa型）。在北达科他州的条件下，ND暮光植物的平均株高为49厘米，100粒重为19.7克，成熟期约为99天。罐头质量被评为合格。农艺和经济重要性的其他特征也在可接受的商业范围内。