Comparison of Bermudagrass Lines Grown in Different Cultural Conditions and the Effect on Screening for Fall Armyworm (Lepidoptera: Noctuidae) Resistance
Comparison of Bermudagrass Lines Grown in Different Cultural Conditions and the Effect on Screening for Fall Armyworm (Lepidoptera: Noctuidae) Resistance
复制标题
不同栽培条件下狗牙根品种比较及其对秋粘虫（鳞翅目：夜蛾科）抗性筛选效果
DOI：
--
复制
发表时间：
1990
期刊：
影响因子：
--
通讯作者：
R. Story
中科院分区：
文献类型：
--
作者：
T. Jamjanya;S. Quisenberry;S. S. Croughan;R. Story
研究了不同栽培条件对百慕达草品质的影响。珀耳斯。及其对秋粘虫（Spodoptera frugiperda 0.）发育和存活的影响。e·史密斯)。秋粘虫幼虫被喂食四种百慕大草系，‘ Coastal ’， ‘ Grazer ’， ‘ Tifton 292 ’和OSU 71 × 6-7，在田间和温室条件下生长。田间栽培的禾草对秋粘虫的发育和存活不利，温室栽培的禾草对秋粘虫的发育和存活不利。以温室栽培的百慕达草为食，幼虫的幼虫重和蛹重显著增加，幼虫发育时间显著缩短。6 ~ 9月，大田草的粗蛋白质、中性洗涤纤维、体外可消化干物质等指标均低于温室草，且下降幅度较大。用温室或田间种植的“食草草”喂养的幼虫通常比用我们评估的其他百慕大草品系饲养的幼虫发育得更快。在温室条件下，‘蒂夫顿292’对秋粘虫表现出抗性，但在田间条件下，与易感品系‘Grazer’的差异并不总是很大。温室筛选百慕达草的秋粘虫抗性应通过实地评价来确定。
A study was conducted to investigate the effects of different cultural conditions on the quality of bermuda grass, Cynodon dactylon (L.) Pers., and its effect on the development and survival of the fall armyworm, Spodoptera frugiperda 0. E. Smith). Fall armyworm larvae were fed four bermuda grass lines, ‘Coastal,’ ‘Grazer,’ ‘Tifton 292,’ and OSU 71 × 6-7, grown under field and greenhouse conditions. Grasses grown in the field were less favorable for fall armyworm development and survival than the same lines grown in the greenhouse. Larvae fed bermuda grasses grown in the greenhouse had significantly higher larval and pupal weights and decreased duration for larval development. The quality of field-grown grasses, as indicated by crude protein, neutral detergent fiber, and in vitro digestible dry matter, was lower and declined more from June to September than the same grasses grown in the greenhouse. Larvae fed either greenhouse- or field-grown ‘Grazer’ generally developed faster than larvae reared on the other bermuda grass lines we evaluated. ‘Tifton 292’ appeared resistant to fall armyworm when grown under greenhouse conditions but did not always differ significantly from the susceptible line, ‘Grazer,’ when grown under field conditions. Greenhouse screening of bermuda grass for fall armyworm resistance should be confirmed with field evaluations.