Figure 1. Effect of salinity on plumule length (cm) of different rice varieties.
parable to saline tolerant check variety Pokkali, while
variety BR29 showed highest salt sensitivity in all salinity
treatments (Table 6).
The radicle dry weight was decreased with increasing
salinity levels. Varieties differences were pronounced in
this character. At high level of salinity (12 and 16 dS m-1),
dry matter reduction in all the variety was serious. At the
lowest salt concentration (4 dS m-1), radical dry weight of
all the varieties were reduced to about 17 - 36% of the
control, whilst Pokkali and MR220 reduced with tremendous
amount of 53 and 63%, respectively. Similar trend
was also observed for EC 8 dS m-1. But from statistical
point of view, Pokkali showed the highest radical dry
weight at 4 dS m-1 as compared to all other varieties. At 8
dS m-1 EC level IR-20 showed highest radical dry weight
and lowest was observed by MR68, MR220 and MR29.
Varieties MR211, Pokkali, MR52 and MR232 produced
second highest radical dry weight at that salinity level.
Similarly, Jamil and Rha (2007) observed that shoot
length, root lengths and dry weight were decreased with
increasing salt stress. Trangenic lines T- 99 and T- 112
had shown greater performance at early seedling growth
as compared to two other trangenic lines T- 115 and T-
121.
Figure 1. Effect of salinity on plumule length (cm) of different rice varieties.
parable to saline tolerant check variety Pokkali, while
variety BR29 showed highest salt sensitivity in all salinity
treatments (Table 6).
The radicle dry weight was decreased with increasing
salinity levels. Varieties differences were pronounced in
this character. At high level of salinity (12 and 16 dS m-1),
dry matter reduction in all the variety was serious. At the
lowest salt concentration (4 dS m-1), radical dry weight of
all the varieties were reduced to about 17 - 36% of the
control, whilst Pokkali and MR220 reduced with tremendous
amount of 53 and 63%, respectively. Similar trend
was also observed for EC 8 dS m-1. But from statistical
point of view, Pokkali showed the highest radical dry
weight at 4 dS m-1 as compared to all other varieties. At 8
dS m-1 EC level IR-20 showed highest radical dry weight
and lowest was observed by MR68, MR220 and MR29.
Varieties MR211, Pokkali, MR52 and MR232 produced
second highest radical dry weight at that salinity level.
Similarly, Jamil and Rha (2007) observed that shoot
length, root lengths and dry weight were decreased with
increasing salt stress. Trangenic lines T- 99 and T- 112
had shown greater performance at early seedling growth
as compared to two other trangenic lines T- 115 and T-
121.
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