Salinity Tolerance of Seashore Paspalum Ecotypes: Shoot Growth Responses and Criteria

盐度 开枪 天鹅趾 雀稗 栽培 生物 干重 生态型 禾本科 园艺 农学 植物 生态学
作者
Geung‐Joo Lee,R. R. Duncan,Robert N. Carrow
出处
期刊:Hortscience [American Society for Horticultural Science]
卷期号:39 (5): 1138-1142 被引量:70
标识
DOI:10.21273/hortsci.39.5.1138
摘要

Evaluation of turfgrass salt tolerance is a basic strategy for selecting grasses that can be grown in areas with salt-affected water or soils. Our objectives were to determine the relative salinity tolerances of 32 grasses and to evaluate potential shoot-based criteria for assessing salinity tolerance. Shoot growth responses to salinity of 28 seashore paspalums ( Paspalum vaginatum Swartz) and four bermudagrass [ Cynodon dactylon (L.) × C. transvalensis Burtt-Davy] cultivars were investigated under solution/sand culture in a greenhouse. Turfgrasses were grown in a sea-salt amended nutrient solution. Salinity ranges were 1.1 to 41.1 dS·m -1 based on electrical conductivity of the solution (EC w ). Selection criteria to assess salt tolerance were absolute growth at 1.1 (EC w 0), 24.8 (EC w 24), 33.1 (EC w 32), and 41.1 dS·m -1 (EC w 40); threshold EC w ; EC w for 25% and 50% growth reduction based on EC w 0 growth; and leaf firing (LF) at EC w 0 and EC w 40 (LF0 and LF40, respectively). Significant variations among 32 entries were observed for all shoot responses except threshold EC w . Ranges of values for shoot parameters were: inherent growth at EC w 0 = 0.10 to 0.98 g dry weight (10-fold difference); growth at 24.8 dS·m -1 = 0.11 to 0.64 g; growth at 33.1 dS·m -1 = 0.09 to 0.54 g; growth at 41.4 dS·m -1 = 0.06 to 0.35 g; threshold EC W = 3.9 to 12.3 dS·m -1 ; EC w 25 % = 14 to 38 dS·m -1 ; EC w 50% = 22 to 43 dS·m -1 ; and LF40 = 7% to 41%. Results in this study indicated substantial genetic-based variation in salt tolerance within seashore paspalums. When evaluation of salt tolerance based on shoot responses is attempted at wide salinity levels up to 40 dS·m -1 , all seven criteria exhibiting a significant F test can be used. Five entries (SI 92, SI 93-1, SI 91, SI 93-2, SI 89) were ranked in the top statistical grouping for all seven-growth parameters, followed by SI 90 ranked in six out of seven, and three paspalums (SI 94-1, `Sea Isle 1', and `Taliaferro') were ranked in five out of seven categories.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
2秒前
共享精神应助猪猪hero采纳,获得10
2秒前
3秒前
3秒前
Sunrise发布了新的文献求助10
4秒前
PSL完成签到,获得积分10
4秒前
4秒前
5秒前
6秒前
liuyf完成签到 ,获得积分10
6秒前
8秒前
8秒前
YJ888发布了新的文献求助10
8秒前
今后应助Lu采纳,获得10
8秒前
EED发布了新的文献求助10
8秒前
88C真是太神奇啦完成签到,获得积分10
9秒前
9秒前
Rondab应助shuyi采纳,获得30
10秒前
酷酷飞烟发布了新的文献求助10
11秒前
12秒前
在水一方应助故意的靳采纳,获得50
13秒前
15秒前
忧郁的鱿鱼完成签到,获得积分10
15秒前
JamesPei应助lm采纳,获得10
17秒前
xww完成签到,获得积分10
17秒前
隐形曼青应助忐忑的阑香采纳,获得10
18秒前
秋半梦发布了新的文献求助10
19秒前
slp完成签到,获得积分20
26秒前
秋半梦完成签到,获得积分10
29秒前
bububusbu完成签到,获得积分10
29秒前
量子星尘发布了新的文献求助10
30秒前
我是老大应助TTm采纳,获得20
31秒前
科研通AI5应助Bressanone采纳,获得10
31秒前
坡坡大王发布了新的文献求助10
32秒前
华仔应助anna采纳,获得10
36秒前
carlin完成签到,获得积分10
38秒前
白子双完成签到,获得积分10
42秒前
FXQ123_范完成签到,获得积分10
42秒前
传奇3应助ran123456采纳,获得30
43秒前
keyan_baby完成签到,获得积分20
44秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3989115
求助须知:如何正确求助?哪些是违规求助? 3531367
关于积分的说明 11253688
捐赠科研通 3269986
什么是DOI,文献DOI怎么找? 1804868
邀请新用户注册赠送积分活动 882078
科研通“疑难数据库(出版商)”最低求助积分说明 809105