摘要
紫花苜蓿耐盐新品系（下称耐盐苜蓿）是以保定、南皮、RS和秘鲁苜蓿为亲本材料，于1988－1994年在河北省中捷农场和山东省德州市苗圃（土壤含盐量0．3－0．5％），通过四代混合选择而成。1995-1997年通过盆栽耐盐鉴定、品种比较试验和生产试验，对新品系耐盐性进行系统研究。结果表明，在0．3％和0．4％NaCl胁迫下，盆栽耐盐苜蓿的干重比保定苜蓿（对照）分别提高13．0％和11．3％。在山东德州（土壤含盐量为0．25－0．45％），产草量比对照提高11．1－13．4％。在山东无棣县（土壤含盐量为0．48％），产草量比保定苜蓿（对照）提高1．82－2.0%，比秘鲁苜蓿提高18．3－33．6％，比陇东苜蓿提高对．5－80．3％。在甘肃兰州，（土壤含盐量为0．206－0．743％），耐盐苜蓿比陇中苜蓿增产9．0－18．0％。试验结果表明，耐盐苜蓿新品系的选育效果良好。
A new salt tolerant alfalfa strain was developed by intercrossing genotypes following 4 cy-cles of selection in saline field with 0. 3 ~ 0. 5% salt content during 1988 ~ 1994. Selection nurserieswere at ZhongJian friendly farm in Hebei province and at a farm of suburb of Dezhou city in Shang Dongprovince. The selechon effect of new salt tolerant strain was studied through pot test, strain comparativetest, production performance test during 1995 ~ 1997. Results showed: Dry weight of new salt tolerantstrain increased by 13 .0% and 11. 3% over that of Bao Ding affalfa in 0. 3% and 0.4% NaCl stress re-spectively. Its dry weight increased by 11. 1 ~ l3. 4%, plant heigh increased by 5. 7 ~ 8.7% . overthat of Bao Ding in the strain comparative test in saline field in the suburb of Dezhou city. Its dry weightincreased by 18.2 ~ 29.0%, 18 .3 ~ 33 .6%, 37.5 ~ 80.3% over that of Bao Ding, BiLou, Long Dongalfalfas respectively in production performance test in saline field of Wu Di county of Shadong Province.Its dry weight increased by 9.0 ~ 18.0% over that of Long Zhong alfalfa in Lan Zhon test field.
出处
《草地学报》
CAS
CSCD
1997年第4期244-250,共7页
Acta Agrestia Sinica
