Strausbaugh Carl A, Eujayl Imad, Rearick Eugene, Foote Paul, Elison Dave
USDA-ARS NWISRL, 3793 North 3600 East, Kimberly, ID 83341.
Amalgamated Research, Inc., Twin Falls, ID 83301.
Plant Dis. 2009 Jun;93(6):632-638. doi: 10.1094/PDIS-93-6-0632.
To reduce storage losses and improve resistance to rhizomania caused by Beet necrotic yellow vein virus (BNYVV), studies were initiated to establish a storage cultivar selection program. In 2006 and 2007, 30 or more commercial sugar beet (Beta vulgaris) cultivars were grown in soil naturally infested with BNYVV. At harvest, two root samples from each plot were collected and used to establish percent sugar. Additional samples were placed on top of an indoor pile (set point 1.7°C) and inside an outdoor pile in a randomized complete block design with four replications. After 142 and 159 days in indoor storage, sucrose reduction ranged from 13 to 90% in 2007 and 57 to 100% in 2008. Outdoor storage sucrose reduction ranged from 13 to 32% in 2007 and 28 to 60% in 2008. An average of 31 and 45% of the root surface was covered with fungal growth in 2007 and 2008, respectively. Cultivars that retained the most sucrose had resistance to BNYVV and the least fungal growth and weight loss. Indoor storage with BNYVV-infested roots allowed for the most consistent cultivar separation and will potentially lead to selection of cultivars for improved storability and rhizomania resistance.
为减少贮藏损失并提高对甜菜坏死黄脉病毒（BNYVV）引起的根腐病的抗性，已启动研究以建立一个贮藏品种选择计划。在2006年和2007年，30多个商业甜菜（Beta vulgaris）品种种植于自然感染BNYVV的土壤中。收获时，从每个地块采集两个根样本并用于测定含糖百分比。另外的样本以随机完全区组设计放置在室内堆垛顶部（设定温度1.7°C）和室外堆垛内，重复四次。室内贮藏142天和159天后，2007年蔗糖减少量在13%至90%之间，2008年在57%至100%之间。室外贮藏蔗糖减少量2007年在13%至32%之间，2008年在28%至60%之间。2007年和2008年，根表面平均分别有31%和45%被真菌生长覆盖。保留最多蔗糖的品种对BNYVV有抗性，且真菌生长最少、重量损失最小。用感染BNYVV的根进行室内贮藏能实现最一致的品种区分，并可能有助于选择具有更好贮藏性和抗根腐病能力的品种。
