New Salt Tolerant Cultivar: "Zhongmu No.l" Alfalfa
1Yang Oingchuan 2Sun Yan 3Geng
Huazhu 1,3(Institute of Animal Science, CAAS, Beijing,100094)
2(Beijing Agricultural College, Agronomy Department, Beijing,
102206)
The new salt tolerant cultivar of alfalfa (Medicago Sativa L. cv. "Zhongmu
No.l") was registered by Chinese Herbage Cultivar Registration Board in
1997. It was bred by 4 generation mass selection in saline land with 0.3-0.5%
NaCl during 1988-1994, Involving 4 parents: Baoding(Medicago sativa L.
cv. Baoding), Nanpi(Medicago sativa L. cv. Nanpi), Rs(Medicago sativa L.
cv. Rs) and Bilu(Medicago sativa L. cv. Bilu).
Description of zhongmu No.l: Plants erect, 50-lOOcm high, distinct
main root, more lateral roots, leaf color is light green, flower color
is from purple to light purple, florescences recamous, seedpods spiral
2-3 circles, seed kidneylike and yellow, Thousand seed weight 1.82-1.9g.
growing luxuriantly, good salt tolerant in seedling period. It can be cut
3-4 times per year at huanghuai hai plain and Bohai Bay in China.
The cultivars comparative test and production test were carried
out at Zhongjie friendly farm in Hebei province, Dezhou farm in Shandong
province, Wudi county in Shandong provine and Lanzhou city in Gansu provine
during 1995-1997. At Dezhou test location, The results show (see tablel):
Zhongmu No.1 was sown on September 7,1994 in 0.25-0.83% NaCl saline land.
The total yield was 5137.5kg/ha in 1995(Cut two times), the total yield
and mean plant height exceed Baoding by 13.4% and 8.7 respectively in 1995.
The total yield was 5424kg/ha in 1996(cut two times), the total yield and
mean plant height exceed Baoding by 11.1% and 5.7% respectively.The total
yield was 8602.5kg/ha in 1997(Cut three times), the total yield and mean
plant height exceed Baoding by 13% and 4.6% respectively in 1997. At wudi
location, It was sown in 0.48% NaCl saline field in august 1995, The total
yield was 4455kg/ha(Cut two times), exceeds Baoding, Bilu,Longdong by 35.5%,35.7%,76.8%
respectively in 1997. At Lanzhou location, It was sown in 0.21-0.74% Na2SO4
field in 1995, It's total yield was 13722kg/ha in 1997, exceeds local Longzhong
alfalfa by 18%.
"Zhongmu No.l" alfalfa is adapted for use in northern China for 0.25-0.83%
NaCl or Na2SO4 saline land.
Table 1. The yield and the plant height of Zhongmu No.1 in 0.25-0.83%
NaCl field at Dezhou test location
| | | | | Mean exceed control cultivar by (%) |
| | | Yield | Plant Height |
| Year | Stubble | Cultivar | (kg/ha) | (cm) | (Yield) |
(Plant height) |
| First cut | ZhongmuNo.1 | 2935.5 | 51.8 |
| 1995 | | Baoding(ck) | 2554.5 | 46.6 | 14.9 | 11.1 |
| Second cut | ZhongmuNo.1 | 2202 | 52.8 |
| | Baoding(ck) | 1968 | 49.7 | 11.9 | 6.2 |
| First cut | ZhongmuNo.l | 3024 | 50.33 |
| 1996 | | Baoding(ck) | 2707.5 | 48.20 | 11.71 | 4.42 |
| Second cut | ZhongmuNo.l | 2400 | 53.6 |
| | Baoding(ck) | 2175 | 50.2 | 10.57 | 6.89 |
| First cut | ZhongmuNo.l | 4531.5 | 62.2 |
| | Baoding(ck) | 3973.5 | 57.9 | 14.0 | 7.4 |
| 1997 | Second cut | ZhongmuNo.1 | 2098.5 | 60.2 |
| | Baoding(ck) | 1867.5 | 57.6 | 12.4 | 4.5 |
| Third cut | ZhongmuNo.1 | 1972.5 | 61.9 |
| | Baoding(ck) | 1750.5 | 58.5 | 12.7 | 6.4 |
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