Genetic Variation in Upland Rice Dawk Pa-yawm Variety for Good Root Traits and Photoperiod Insensitivity
Abstract
The objectives of this study were to create genetic variation between upland rice, Dawk Pa-yawm and lowland rice, SB604 and line selection by pedigree method which focused on fragrant, good root architect of 6 root traits and photoperiod insensitivity. Rice hybrid were planted at the Agricultural Training and Research Center 100 rai, Nakhon Ratchasima Rajabhat University. Rice hybridization conducted in 2017, then mid parent heterosis analysis were done in 2018 for F1 and analysis of broad-sense heritability (hB2) of F2 in 2019. The results showed that F1 and F2 had 50 percent days to flowering earlier than their parents, indicating that these types are photoperiod insensitivity. In F1, the highest significant positive heterosis for number of grain/panicle (27.91-42.42%) was over dominance for higher parent gene effect. Positive dominance gene effect for plant height and 1,000 grains weight. Root length was higher than parent (3.68-3.89%). The positive dominance gene effect and most of root traits were additive gene effect. The highest positive heterosis for number of root tip, root length/volume and root surface area. In F2 showed that plant height, number of grain/panicle, percentage filled grain, 1,000 grains weight were normal distribution, transgressive segregation and fragrant. Estimation of broad-sense heritability showed that plant height, number of tillers/plant, number of panicle/plant, number of grain/panicle and 1,000 grains weight were highest (42.52-89.18%), indicating that the variability of these traits was caused by genes and transmitted from parents to their generation. This research illustrated that the selection method using in this study is effective for selecting fragrant, good root traits and photoperiod insensitivity in the early generation of breeding program. Keywords : breeding lines ; good root traits ; photoperiod insensitivity ; genetic variationReferences
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Changsri, R., Namuco, O. and Johnson, D. (2014). Development of weed-Competitive rice: Shoot and root traits for weed competition. In Proceeding Rice and Cereals, Northeastern Rice Research Center Group Seminar. (pp. 37-58). Thailand
Chongkid, B. (2002). Khao Dawk Mali 105 varietal improvement of drought resistance for production under upland conditions. Thai Journal of Science and Technology, 10(1), 26-34. (in Thai)
Khodruavkeaw, T., Thebault, P.C., Pusadee, T. and Jamjod, S. (2020). Evalution of progeny population between upland rice KumHomMorChor and photoperiod insensitive ricevarieties. Khonkaen Agr. Journal, 48(3), 535-546. (in Thai)
Karladee, D., Pulpipat , J. and Jamjod, S. (2013). Genetic composition of heterosis in F1 rice hybrid.
Thai Agricultural Research Journal, 31(3), 257-269. (in Thai)
Kunkaew, W., Julsrigival, S. (2011). Handbooks of generation mean analysis. Chiangmai printing co.,Ltd.
Khunpilueg, P., Julsrigival, S., Senthong, C. and Kaladee, D. (2006). Combining abillity for yield and yield components in upland and lowland rice crosses. Agriculture Journal, 22(1), 13-19. (in Thai)
Mungkung, R., Gheewala , S., Poovarodom, N. and Towprayoon, S. (2011). Carbon footprinting of rice products. Kasetsart Engineering Journal, 75(24), 53-60. (in Thai)
Phonwong, K., Sreewongchai, T. and Sripichitt, P. (2018). Phenotypic evalution of root traits in F2 progenies from cross between lowland and upland rice. Thai Journal of Science and Technology, 7(5), 471-480.
(in Thai)
Sornchai, J. and Pongrat, A. (2015). Genetic variation and heritiabillity for yield and yield components in sesame (Sesamum indicum L.). Rajabhat Agricultural Journal, 14(1), 56-61. (in Thai)
Sari , W.K., Nualsri, C., Junsawong, N. and Soonsuwon, W. (2019). Heterosis studies for yield and agronomic traits in Thai upland rice. Indian Journal of Agricultural Research, 53(3), 255-262.
Saithanoo, S. (1994). Principles of animal breeding. (1). Department of Animal Science, Faculty of Natural resources, Prince of Songkla University.
Uga, Y., Kitomi, Y., Yamamoto, E., Kanno, N., Kawai, S., Mizubayashi, T and Fukuoka, S. (2015). A QTL for root growth angle on rice chromosome 7 is involved in the genetic pathway of DEEPER ROOTING 1. Rice (New York) 8:8, 2-8.
Yi, M., Than New, K., Vanavichit, A., Chai-arree, W. and Toojinda, T. (2009). Marker assisted backcross breeding to improve cooking quality traits in Myanmar rice cultivar Manawthukha. Filed Crops Resrech, 113,
178-186.
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Published
2023-05-11
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