Semi-dwarf IR36

Semi-dwarf IR36

Semi-dwarf IR36 is a rice variety developed by Gurdev Khush.

By cross-breeding IR8 with 13 parent varieties from six nations, Dr. Khush developed IR36, a semi-dwarf variety that proved highly resistant to a number of the major insect pests and diseases that drove down farmers’ rice yields and raised prices of the staple food for Asian families. IR36 matures rapidly – 105 days compared to 130 days for IR8 and 150-170 days for traditional types – and produces the slender grain preferred in many countries. The combination of these characteristics soon made IR36 one of the most widely planted food crop varieties worldwide in just a few years. About 110,000 km² were planted with IR36 worldwide in the 1980s, a success which Dr. Khush topped with IR64 and again with IR72 in 1990.

The variety was one of many of the Green Revolution which replaced many local strains and genetic diversity previously found in rice paddies. It is estimated that over 100,000 local strains were grown in 1960, which have been largely replaced by hybrid varieties.


Wikimedia Foundation. 2010.

Игры ⚽ Нужно сделать НИР?

Look at other dictionaries:

  • List of rice varieties — The following is a list of varieties of rice. Worldwide there are more than 40,000 different varieties of rice, species name Oryza sativa. Here are some of the common and popular varieties. Contents 1 Major categories 2 African varieties 3… …   Wikipedia

  • Green Revolution — For other uses, see Green Revolution (disambiguation). Increased use of various technologies such as pesticides, herbicides, and fertilizers as well as new breeds of high yield crops were employed in the decades after the Second World War to… …   Wikipedia

  • New Rice for Africa — ( NERICA ) is an interspecific cultivar of rice developed by the Africa Rice Center (AfricaRice) to improve the yield of African rice varieties. Although 240 million people in West Africa rely on rice as the primary source of food energy and… …   Wikipedia

  • Glutinous rice — (Oryza sativa var. glutinosa or Oryza glutinosa; also called sticky rice, sweet rice, waxy rice, botan rice, biroin chal, mochi rice, and pearl rice, and pulut)[1] is a type of short grained Asian rice that is especially sticky when cooked. It is …   Wikipedia

  • Parboiled rice — is rice that has been partially boiled in the husk. The three basic steps of parboiling are soaking, steaming and drying.[1]. These steps also make rice easier to process by hand, boost its nutritional profile (other than its vitamin B content… …   Wikipedia

  • Black rice — as sold in China For the Valencian dish, see Arroz negro. Black rice is a kind of sticky rice which is one of several black colored heirloom plants producing rice variants such as Indonesian black rice and Thai Jasmine Black Rice. Black rice is… …   Wikipedia

  • Japanese rice — Scientific classification Kingdom: Plantae (unranked): Angiosperms (unranked): Monocots …   Wikipedia

  • Molakolukulu — is a variety of rice cultivated in Andhra Pradesh in India. This variety is often called nellore molakolukulu[1], perhaps due to its origin in the Nellore region of Andhra Pradesh. References ^ Calories in Rice, Retrieved June 30, 2011 …   Wikipedia

  • Champa rice — is a quick maturing, drought resistant rice that can allow two harvests, of sixty days each in one growing season. Originally introduced into Champa from Vietnam, it was later sent to China as a tribute gift from the Champa state during the reign …   Wikipedia

  • Nishiki rice — Nishiki is a brand of California grown, medium grain rice sold by JFC International. In Japan, some unrelated breeds of rice also have Nishiki in their names, such as Yamada Nishiki, which is used to brew sake. External links Product Description… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”