10 ferred to as synthetic varieties, which are considered 11 completely equivalent to synthetic cultivars here) ... and their work with maize. They 35 described the ‘‘synthetic production of a variety’’ as 36 involving hybridization among several inbred lines, ... 2 Breeding Synthetic Cultivars
synthetic maize seed without buying seeds every season. It has been suggested that synthetic maize varieties would be of considerable value, where the cost of hybrid seeds is high relative to the value of the expected crop (Mohammed, 2013). Synthetic varieties were first suggested by Hayes and Garber (1919).
Maize (Zea mays L.) synthetic populations are low-cost and stable varieties, obtained by cross pollination of a group of inbred lines. They are a viable alternative for situations where the use of hybrid seed and related inputs are too expensive.
Development and examples of the synthetic variety are given on the page Synthetic Variety Production. For various breeding methods of plant breeding visit to links provided on the page Plant Breeding. Synthetic Variety. Synthetic Variety Production; Quick Links for Plant Breeding
Development of synthetic varieties requires the development of inbred lines, their testing for general combining ability, making their all possible cross combinations, predicting the F2 performance constituting a number of
SYNTHETIC VARIETIES The possibilities of commercial utilization of synthetic varieties in maize was first suggested by Hayas and Garber in 1919. Synthetic varieties have been of great value in the breeding for those cross pollinated crop, where pollination control is difficult.
ADVERTISEMENTS: Everything you need to know about synthetic and composite varieties of crops. Q. 1. What is inbred line? Ans. In allogamous species, a true breeding line obtained by continuous inbreeding is called inbred line. ADVERTISEMENTS: Main features of inbred line are given below: (i) It is relevant to cross pollinated species (ii) It is […]
Once synthesized, a synthetic is maintained by open-pollination in isolation is referred as synthetic variety. Hayas and Garber suggested the commercial utilization of synthetic varieties in Maize in 1919.
Jenkins (1940 ) suggested that inbred lines with one generation selfing can be used for development of a synthetic variety. The variety developed from inbred lines can be reconstituted exactly when the parental material is inbreds or clones.
Synthetic variety is the same to hybrid once but development of synthetic varieties requires the development of inbred lines, their testing for general combining ability, making their all possible cross combinations, predicting the F2 performance constituting a
Plant breeding - Synthetic varieties: A synthetic variety is developed by intercrossing a number of genotypes of known superior combining ability—i.e., genotypes that are known to give superior hybrid performance when crossed in all combinations. (By contrast, a variety developed by mass selection is made up of genotypes bulked together without having undergone preliminary testing to ...
Thus, inbred lines with good GCA are identified and finally selected for development of synthetic variety. 2) Production of Synthetic Variety: A synthetic variety may be produced in one of the following two ways:
A composite variety, Composite I, has been evolved in Brassica campestris var. toria. It was developed by compositing 10 elite toria strains; it matures in 100 days, exhibits profuse branching, yields about 11 q/ha of seed, which contain about 40% oil.
Procedure of developing composite variety. Differences between Synthetic and Composite Cultivars. Achievements: Synthetic varieties and Composite va... Quiz. Topic 27. Topic 28. Topic 29. Topic 30. ... Differences between Synthetic and Composite Cultivars. Particulars : Synthetic cultivars: Composite cultivars: Base Material:
SYNTHETIC AND COMPOSITE VARIETY PRESENTED BY: Pawan Nagar Reg. no.: 04-2690-2015 M.Sc.(Fruit Science) 2. SYNTHETIC VARIETIES The possibilities of commercial utilization of synthetic varieties in maize was first suggested by Hayas and Garber in 1919. Synthetic varieties have been of great value in the breeding for those cross pollinated crop, where pollination control is difficult.
Ans. Main difference between mass selected and synthetic varieties are given below: (i) In mass selected variety, component genotypes are selected on the basis of phenotypic performance, whereas component lines of synthetic variety are selected on the basis of gca.
Composite variety is a variety developed by mixing the seeds of various phenotypically outstanding lines possessing similarities for various characteristics like height, seed size, seed color, maturity etc. Crossing among the selected is encouraged.
Synthetic varieties are grown in a wide range of crop species including cereals .. authors iep?ited ihe differences between synthetic varieties to be rather small, if th? .. "composite variety" instead of synthetic, the principal breeding methods.
A synthetic variety is developed by intercrossing a number of genotypes of known superior combining ability--i.e., genotypes that are known to give superior hybrid performance when crossed in all combinations. (By contrast, a variety developed by mass selection is made up of genotypes bulked ...
Difference between Synthetic and Composite Variety : Sr.No Synthetic Variety Composite Variety 1 Crossing in all combination of number of lines that combine well with each other Mixing the seeds of several phenotypically outstanding lines it and encouraging open pollination to produce crosses in all combination among the lines 2 4-10 numbers of parents are involved.
Synthetic variety can be developed from well established and tested inbred lines or from S 0 or S 1 plants. Development or Production of Synthetic Variety from established Inbred lines. Inbreds are selected at the starting; Those are crossed with common tester (top crossing) to test combining ability
It shows more heterosis than synthetic. 6. Reconstituted is done. Reconstituted is never done. 7. Prediction of performance possible. Prediction of performance is not possible. 8. Maintenance of variety easy. Maintenance of variety is difficult but easy than hybrid. 9. Ex. ICMS- 7703, ICMS-7704. Ex. ICTP-8203, WCC-75.