Hybrid Seeds

Hybrid Seeds

 

seeds produced by crossing plants belonging to different forms, varieties, lines, species, and genera. Because of heterosis, hybrid seeds often give higher yields than non-hybrid seeds. Hybrid seeds of corn, sugar beets, sorghum, vegetables, and some fodder grasses are widely used in Soviet agriculture. The possibility of using hybrid seeds of wheat, oil-producing plants, and other plants is under study. Hybrid seeds of the first generation are generally sown. The productivity of seeds of the second and subsequent generations decreases sharply. A specialized network of seed-producing farms has been organized to grow hybrid corn seeds, techniques for treating them have been developed. Because of the application of cytoplasmatic male sterility, hybrid corn seeds are grown without manual labor to remove the panicles. Hybrid sugar beet seeds are obtained by artificial crossing or free wind pollination. To obtain hybrid seeds of triploid varieties, the ratios of the rows are one row of tetraploid varieties to three or four rows of diploid varieties and one row of polyspermous varieties to five or four rows of monospermous varieties. When hybrid seeds of self-pollinating vegetable crops are grown, there is no need for castration because sterile forms are used (for example, tomatoes). In the case of cucumbers, dioecious varieties are used as maternal forms.

References in periodicals archive ?
The introduction of hybrid seeds would challenge Pakistan's food security because single-use seeds would replace our heirloom seeds.
The production of the hybrid seeds in Azerbaijan will lead to a further increase in productivity and will contribute to the development of the country's economy.
Here seeds of international countries which are called hybrid seeds are utilized.
Agriculture in the province of Sindh is under serious threat as some influential elements are working hard to introduce hybrid seeds instead of our own seeds.
Private companies also have good hybrid seeds, so farmers must get quality seed of a good company, he added.
Enumerating different features of hybrid wheat, he informed that 30kg hybrid seeds were used in an acre.
With the recently imposed 35-percent tariff on rice, the missing support for fertilizer and hybrid seeds will surely spell disaster for 40 percent (or one million) of our rice farmers.
They said the increased dollar rate had made costlier the prices of agricultural inputs, like imported hybrid seeds and pesticides.
This year, the DA has 380,000 kilograms (kg) of certified seeds; 105, 640 kg of registered seeds and 45,000 of hybrid seeds. They also have 62,948 kg of corn seeds.
. distribution of certified and hybrid seeds in newly irrigated areas.
In Region 5, the DA prepositioned 1,735 bags of rice seeds, 2,303 bags of hybrid seeds, 2,000 bags of genetically modified organism (GMO) yellow corn seeds, 2,405 bags of open-pollinated variety white corn seeds, 1,700 bags of white corn seeds and 556.02 kilograms of OPV vegetable seeds.
With the marketing of hybrid seeds for coarse rice varieties, many farmers in Sindh and Balochistan have been able to double the per-acre yield, which has also brought down the cost of production and increased their income significantly.