Title: Basic scientific concepts of biotechnology: historical perspective and development of modern biotechnology
1Basic scientific concepts of biotechnology
historical perspective and development of modern
biotechnology
- Vibha Dhawan
- Vice Chancellor
- TERI School of Advanced Studies
- 6th February 2005
2Food problems have haunted mankind since time
immemorial
- Expanding the cultivated area
- Technological Breakthroughs
3- By mid 1960s, hunger and malnutrition were
widespread, especially in Asia
4- 1967 Report of the US Presidents Science
Advisory Committee concluded that the scale,
severity and duration of the world food problem
are so great that a massive, long-range,
innovative effort unprecedented in human
history will be required to master it
5- The Rockefeller and Ford Foundations took the
lead in establishing an international agriculture
research system to help, transfer and adapt
scientific advances to the conditions in
developing countries - The first investments were in rice and wheat
6- The breeding of improved varieties, combined with
the expanded use of fertilizers, other chemical
inputs and irrigation, led to dramatic yield
increases in Asia and Latin America, beginning in
the late 1960s
7Technological Breakthroughs
- Modern plant breeding, improved agronomy,
development of inorganic fertilizers pesticides
and expansion of irrigated areas helped in
increasing crop productivity.
Example Wheat It took nearly 1,000 years for
wheat yields to increase from 0.5 to 2 metric
tonnes per hectare, but only 40 years to climb
from 2 to 6 metric tonnes per hectare
8Green Revolution Blessing or curse
- Focus on a few grain crops wheat, rice, maize
- High inputs fertilizers, pesticides
- High resource farmers irrigated lands
- Crop yield the major goal
9Salient Features of Green Revolution
- Higher yields
- More responsive to plant nutrients
- Shorter and stiffer straw
- Early maturity
- Resistance to major pests and diseases
10Social Impacts
- Increased farm income
- Stimulation of rural non-farm economy
- Expansion of marketing services
- Real per capita income almost doubled in Asia
and poverty declined from nearly three out of
every five Asians in 1975 to less than one in
three by 1995 - The absolute number of poor people declined from
1.15 billion in 1975 to 825 million in 1995
despite a 60 increase in population
11Problems associated with the Green Revolution
- Environmental degradation
- Increased income inequality
- Inequitable asset distribution
- Decline in nutritional security
Some of the criticisms are valid and are still
need to be addressed
12Green Revolution Criticism
- Excessive and inappropriate use of fertilizers
and pesticides has polluted waterways, poisoned
agricultural workers and killed beneficial
insects and other wildlife - Irrigation practices have led to salt build-up
and thus abandonment of faming lands - Ground water levels are retreating
- Heavy dependence on few major cereal varieties
has led to loss of biodiversity on farms
13- Some of these outcomes were inevitable as
millions of farmers began to use modern inputs
for the first time but inadequate extension and
training and absence of effective regulation of
water quality, input pricing and subsidy policies
made modern inputs too cheap and encouraged
excessive use creating negative environmental
impact
14- Today there is a tendency to overstate the
problem and to ignore the appropriate
counterfactual situation
What would have been the magnitude of hunger and
poverty without the yield increases of the Green
Revolution and with the same population growth?
15- Often ignored is the positive impact of higher
yields that saved huge areas of forests and
environmentally fragile lands that would have
otherwise be needed for farming
16Stark Realities..
- 800 million people cannot afford two course of
meals - About 30,000 people, half of them children, die
every day due to hunger and malnutrition - Nearly 1.2 billion people live on less than a
dollar a day
In the next 50 years, mankind will consume as
much food as we have consumed since the
beginning of agriculture 10,000 years ago -
Clive James
17Problems with Agriculture in Developing Countries
- Green Revolution fatigue
- Low productivity
- Small holdings
- Subsistence
- Mercy of monsoon
- Limited water and land
- Disease, pests, drought, weeds
- Storage and transportation
- Conventional plant improvement methods are
reaching their limits - Agricultural growth is now 1 compared to 3 in
1970s
18Thus, technology must evolve and percolate to
the end-user at a much faster paceWe must aim
at an agricultural growth of 4 per year, if
India has to achieve its ambition of overall
economic growth rate of over 8 per
annum (Prime Ministers Inaugural Speech at
National Conference on Krishi Vigyan Kendras in
New Delhi. October 27, 2005)
19The Prime Minister reemphasized in the India
Economic Summit 2005 (23rd November
2005)Though the Xth Plan assumed a growth rate
of 4 for agricultural production, the reality
was different. the first 3 years we have not
been able to ensure 1.5 rate of growth. We are
focusing on technological breakthroughs for
scaling up yields.
20Modern genetic modification
- Inserting one or few genes to achieve desired
traits - Transfer of genes into crop plants
- Relatively precise and predictable
- Allows flexibility
21Biotechnology can add value to global agriculture!
- Environmental impact - decreased use of
pesticides - Reduced losses from pests and diseases
- Improved nutritional efficiency
- Improved productivity
- Post harvest quality - prolong shelf life of
fruits, vegetables and flowers - Stress tolerance - drought, acidity, salinity,
temperature...
22Why Biotechnology?
- Knowledge-based approach
- Offers unique solutions
- Integrates technology delivery
- Scale-neutral
- Does not displace traditional methods
- Environment-friendly
- Portable - across crops
- Versatile - impact on all facets of food chain
from producers to consumers
23How biotechnology can help developing countries
and resource-poor farmers?
- Improve food and nutritional security
- Enhance production efficiency
- Promote sustainable agriculture
- Reduce environmental impact
- Empower the rural sector through income
generation reduce economic inequality - Reduce crop damage food loss
24Constraints to biotechnology development and
assimilation in developing countries
- Finance
- Technical capability
- Infrastructure
- Ambivalent policies
- Trade issues
- Biosafety regulation
- Intellectual property protection
- Public perception
25- All Biotechnologies does not mean GM Traditional
Biotechnologies offers no resistance, yet not
commercialised in developing countries such as
Tissue Culture, Biopesticides, Biofertilizers
26Traditional Biotechnologies Gap Analysis
- Awareness about the potential benefits
- Extension mechanism
- Microfinancing
27Technologies Micropropagation
- Micropropagation
- Micropropagation is a technique of regenerating
clonally uniform plants under aseptic conditions
Stages of Micropropagation
28Micropropagation Technology Park (MTP)
Technologies Micropropagation (Contd)
29Inoculation Room at TERIs MTP
30Growth Room at TERIs MTP
31Major Objectives
Micropropagation Technology Park
(MTP) (Established in 1991 through DBT support)
- Large-scale multiplication of superior clones of
various species using tissue culture - Mass propagation of species that are difficult to
regenerate by conventional methods - Transfer of proven technologies to the industry/
entrepreneurs - Impart training for large-scale production of
plants by tissue culture - To serve as a technology resource centre for
up-coming units
32Two Pronged Approach
Bioprospecting of Plant Diversity for Biomolecules
A) With unknown active molecules Prospecting of
plant diversity for new active molecules via
bioassay mediated isolation of plant extracts
B) With known active molecules e.g. Azadirachta
indica, Glycerrhiza glabra, Withania
etc. Prospecting of diversity for active
ingredient in different plant varieties /
accessions
33 Mycorrhizal Research
- Consortium product of AM and EM
- Hyphal fusion based product
- Cocktail of beneficial organisms
- Specific product for wheat, pulse, rice rotation
- Mycorrhiza for Organic farming and its package of
practices for various plants
34Sugarcane with various treatments for pest and
nutrient management
35Crop nursery from the sugarcane setts of Tissue
Cultured plants
36Our Experiences
- Demonstration and capacity building to absorb new
technologies must be developed
37Questions to Ponder
- Are we making adequate research investments?
- Do we have long term research policies?
- Implications of IPR on agriculture in developing
countries? - Do we need to invest on gene discovery or work on
borrowed genes? - Are our strategies geared up to meet global
challenges?
The challenge before us is to produce nutritious
food for all at affordable price
38Goal
- Every citizen of this planet has the right to
have enough nutritious food at an affordable
price to achieve this goal, technologies must
be developed/ upgraded and made available to
every practicing farmer.