Agriculture Reference
In-Depth Information
Table 34
Agronomic traits of cold tolerant rices, Shillong.
Character
Range
Mean
Correlation
Minimum
Maximum
Coeffi cient
With grain
Yield
Days to 50%
121
170
159.31
0.224
fl owering
(K332)
(Khamang,
Kba-sawrit, B2&B4)
Plant height (cm)
60
110
88.77
0.477**
(K332)
(Zichum)
Leaf area index
1.84
6.70
3.27
0.143
(Ryllored)
(PK-2-26-1)
Tillers per plant
4
16
7.91
0.207
(Kba-sawrit)
(PK-2-26-1)
Effective tillers/plant 4
16
7.98
0.307*
(Kba-sawrit)
(PK-2-26-1)
Flag leaf angle (ยบ)
70
115
93.27
0.387**
(Namyi)
(PK-2-3-1)
Panicle length (cm)
15
24
20.73
0.238
(K332)
(Dull08, Ch1039)
Grain per panicle
23
84.4
42.61
0.726**
(Muzzudo)
(Ryllo red A)
Grain Sterility (%)
27
98
52.30
-0.594**
(Channa paddy) (Muzzudo)
Harvest index
0.01
0.70
0.35
0.602**
(Borkat)
(Ryllored 6)
Grain yield (t/ha)
0.1
2.5
1.91
-
(Borkat)
(PK-2-26-1)
It has been recognized that the maximum altitude in
China for rice planting is 2710 m. Different climatic ecotypes
of rice has different requirement of temperature condition.
