Image copyright Getty Images Image caption Rice being harvested in Northwest Vietnam

Scientists say that more than 100 thousand varieties of rice have been safeguarded for the future.

Samples in the world's largest rice gene bank in the Philippines are being used to help farmers develop rice crops that can survive drought and flooding.

The International Rice Research Institute (IRRI) gene bank has secured permanent funding from the Crop Trust.

It is part of international efforts to store seeds in gene banks to protect food supplies in a warming world.

"These seeds are miracles - we believe that in this natural diversity of rice you have almost any trait that you would want to look for," said Marie Haga, executive director of the international non-profit organisation, the Crop Trust.

She said rice is relatively easy to store, and should survive preservation for hundreds of years at low temperatures.

The rice contains the genetic diversity that can be used to breed new rice crops capable of withstanding pests and disease as well as flooding and drought.

Image copyright Getty Images

Rice food facts

Rice accounts for over 20% of global calorie intake

Over 90% of the world's rice is produced and consumed in Asia with six countries (China, India, Indonesia, Bangladesh, Vietnam and Japan) accounting for 80% of the world's production and consumption

By 2050, annual rice consumption is estimated to rise from 420 to 525 million tonnes.

One recent advance from IRRI, which is based in Los Banos, Philippines, is a strain of rice that can survive areas hit by flooding.

"Scuba rice" has been introduced in Asia and is now being adapted for growing in Africa.

Image copyright IRRI Image caption The IRRI gene bank holds wild species of rice from around the world

Ruaraidh Sackville-Hamilton, an evolutionary biologist who manages the IRRI genebank, said the work to conserve rice has a proven track record in bringing benefits to the world.

"With this collection safely conserved, we can continue to use it to develop improved rice varieties that farmers can use to respond to the challenges in rice production, and to adapt to the changing tastes and preferences of consumers everywhere," he said.

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