Agriculture Reference
In-Depth Information
been identified to stress tolerance in tomato i.e. for water use efficiency
in
S. pennellii and S. pimpinellifolium
as source of salt tolerance. Only a
few major QTLs account for the majority of phenotypic variation indicat-
ing the potential for marker-assisted selection (MAS) for salt tolerance.
Integration of QTL analysis with gene discovery and modeling of genetic
networks will facilitate a comprehensive understanding of stress tolerance,
permit the development of useful and effective markers for marker-assist-
ed selection, and identify candidate genes for genetic engineering.
8.4.4 CLIMATE CHANGE BRINGING NEW AVENUES
Due to increase in temperature the area under tropical and subtropical veg-
etables will increase and it can be grown in those areas where it was not
grown earlier. Thus will be opportunity to introduce new vegetables in
these areas. However, the temperature vegetables which required chilling
temperature like beet, cabbage temperature carrot, etc. may be shifted to
higher altitude.
8.4.4.1
THRUST AREA
To mitigate the effect of climate change in vegetable crop following strate-
gies are to be adopted:
1. Screening of germplasm of major vegetable crops for stress toler-
ance (high/low temperature, drought, flood, etc.).
2. Development of cold and hot set varieties of tomato with better
consumer's acceptance.
3. Development of low chilling requirement varieties in temperate
vegetables like cabbage, carrot, beet root, turnip, knol-khol, brus-
sel sprout, etc.
4. Development of leafy vegetables like palak, spinach, coriander,
etc., with wider adaptability and greater tolerance to high tempera-
ture.
5. There is also need to increase 'N' use efficiency and water use ef-
ficiency of vegetable crops through better production system.
A sustainable program has been made during last decade in breeding
of tomato, radish, cauliflower, carrot that is tolerant to high temperature
and produce satisfactory yield. As greater resistance to insect and disease
