PROPOSAL Improvement of Rice Varieties Using Marker-Assisted Selection In Lao PDR
description
Transcript of PROPOSAL Improvement of Rice Varieties Using Marker-Assisted Selection In Lao PDR
PROPOSAL
Improvement of Rice Varieties Using Marker-Assisted Selection
In Lao PDR
Introduction Rice is the stable food of the people in the Lao PDR In the year 2001, the area planted to rice was approximately 746’700 ha and accounted for about 80% of the total crop area and total rice production was about 2.3 millions metric tons of paddy rice. It was the third successive year
Rainfed Upland (21.5%)
Irrigated 13.6%
Rainfed low land (65%) Rainfed upland (12%)
Rainfed Lowland (69%)
Irrigated (19%)
Planted Rice Area Rice Production
The problem of rice cultivation
Major diseases and pest: blast, bacterial
leaf blight, gall midge, stem borer and other Drought, flood and some year both
drought and flood occurred (Rainfed)
(the central and southern regions) Low temperature (Irrigated, North)
Future Rice Improvement
• From 1999, Laos have achieved self-sufficiency in rice production, with further production increases likely to provide the country with a rice surplus for possible export.
• This expected increased production will reflect the significant expansion in the area of irrigated rice cultivation currently taking place, combined with continue increase in yield in the rainfed lowland environment as a result of increase used of improved varieties increased fertilizer use and improvements to other production practice.
The aim of the varietal improvement program is to provide Lao farmers with a range of varieties with increased yield potential, good eating quality and broad adaptability to Lao conditions.
Varietal improvement objectives
To obtain good eating quality varieties with drought tolerance
The major objective
Plant material
Donor: TDK 1Recipient: IR57514
Breeding scheme
X
IR 57514 TDK 1
IR57514 X F1
IR57514 X BC1F1
IR57514 X BC2F1
IR57514 X BC3F1
BC4F1