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Title: | Assessment of Magnitude of Heterosis in Double and Single Crosses over their Parental Lines in Post-Rainy Sorghum [Sorghum bicolor(L.) Moench] |
Other Titles: | Not Available |
Authors: | Patroti, Parashuram.,Sharma,K.K., and Samdur,M.Y. |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR::Indian Institute of Millets Research IIMR Regional Station Solapur |
Published/ Complete Date: | 2018-02-02 |
Project Code: | IIMR/CI/2015-20/76 |
Keywords: | Post-rainy sorghum,Heterosis, Single crosses, Double crosses, Genetic diversification |
Publisher: | Wizcraft Publications |
Citation: | Patroti, Parashuram.,Sharma,K.K., and Samdur,M.Y.2018. Assessment of Magnitude of Heterosis in Double and Single Crosses over their Parental Lines in Post-Rainy Sorghum [Sorghum bicolor(L.) Moench].Contemporary Research in India (Special issue : National Seminar" Recent trends in Plant sciences and agricultural Research (PSAR-Jan.2018): 257-261) |
Series/Report no.: | Not Available; |
Abstract/Description: | Unlike kharif sorghum being dominated with hybrids, post-rainy sorghum growing areas are mainlycultivated with varieties especially landrace selections. Contrary to kharif hybrids, the heterosis in rabi hybrids is insignificant as the landraces are used in the development of hybrid parents.Most of the varieties developed by breeders in self-pollinated crops like sorghum are based on single crosses between two parents and bi-parental populations have only one opportunity for crossing over. However 34 break-up points are estimated to occur per crossing generation.Limited efforts have been made in generating multiple crosses (e.g., three-way or double crosses). In the present study eight parents viz., M35-1, Parbhani Moti, DSV5, CSV216R, CSV29R, CRS20, Sel.3 and CRS4 of rabi adaptation were used to synthesize four single crosses and two double crosses. Double and single crosses along with their parents were evaluated in Randomized Block Design in two replications and the mean valueswere used to estimate the magnitude of heterosis for yield and its attributing traits over mid-parent and better parent. Results revealed that there are significant differences for most of the traits and double cross hybrids were better in their performance over single cross hybrids. One of the double cross hybrid DC-2;((DSV5 × Sel.3) × (CSV216R × CRS4)) exhibited highest level of heterosis for the traits like panicle weight (Mp=64.27%;Bp=45.99%), grain yield per plant (Mp=81.72%; Bp=56.76%), fodder yield per plant (Mp=71.15%; Bp=55.82%) and 100 seed weight (Mp=63.27%; Bp=60%, with a highest mean value of 6.0g) whereas other double cross DC-1;((M35-1 × CSV-29R) × (Parbhani Moti × CRS-20))found superior for plant height, panicle exertion and panicle length. Even though two single cross hybrids viz.,CSV216R × CRS4 and Parbhani Moti × CRS20 showed good levels of heterosis for Panicle exertion, panicle length, grain yield and fodder yield but the values are less than double cross hybrids. So study indicated that an additional round hybridization involving more parents may be of much rewarding in diversifying the genetic base of breeding populations and realizing fair amount of heterosis in post rainy situation than that of bi-parental matings. |
Description: | Not Available |
ISSN: | ISSN 2231-2137 |
Type(s) of content: | Research Paper |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Contemporary Research in India |
NAAS Rating: | Not Available |
Volume No.: | Special issue: Volume-III January , 2018 |
Page Number: | 257-261 |
Name of the Division/Regional Station: | Plant Pathology |
Source, DOI or any other URL: | www. contemporayresearchindia.net |
URI: | http://krishi.icar.gov.in/Publication/handle/123456789/11285 |
Appears in Collections: | CS-IIMilletsR-Publication |
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