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By cross-breeding together 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 raised farmers' rice yields and drove down prices of the staple food for Asian families. [1]
[1] [2] [3] With the advent of anthropogenic climate change and greater ecosystem instability CWRs are likely to prove a critical resource in ensuring food security for the new millennium. [4] It was Nikolai Vavilov , the Russian botanist who first realized the importance of crop wild relatives in the early 20th century. [ 5 ]
Breeders rely on farmers’ varieties and wild relatives as a source for interesting traits, such as resistance against pathogens and pests. [53] The number of varieties has decreased by 75% in the past century [54] and there is far less area planted to landraces worldwide as these have been replaced by scientifically bread varieties. [53]
IIHR Main Building. The Indian Institute of Horticultural Research (IIHR) is an autonomous organization acting as a nodal agency for basic, strategic, anticipatory and applied research on various aspects of horticulture such as fruits, vegetable, ornamental, medicinal and aromatic plants and mushrooms in India. [1]
Hybrid Rice. Hybrid rice is a type of Asian rice that has been crossbred from two very different parent varieties. [1] As with other types of hybrids, hybrid rice typically displays heterosis or "hybrid vigor", so when grown under the same conditions as comparable purebred rice varieties, it can produce up to 30% more yield. [2]
High-yielding varieties (abbreviated as HYVs) of agricultural crops are varieties of crops that are usually characterized by a combination of the following traits in contrast to the conventional ones: Higher crop yield per unit area; Higher quality of crops; Improved response to fertilizers; Early maturation; Resistance to droughts and floods
The Plant Variety Protection Act of 1970 (PVPA), 7 U.S.C. §§ 2321-2582, is an intellectual property statute in the United States.The PVPA gives breeders up to 25 years of exclusive control over new, distinct, uniform, and stable sexually reproduced or tuber propagated plant varieties.
All soils that share a certain set of well-defined properties form a distinctive soil type. [1] Soil type is a technical term of soil classification, the science that deals with the systematic categorization of soils. Every soil of the world belongs to a certain soil type. Soil type is an abstract term. In nature, you will not find soil types.