Effect of Various Phytochemicals for Evaluating Genetic Variability in Parental Lines for Producing F1 Hybrid Rice Seeds Using Modern CMS Breeding Technology

The experiment was conducted at the Agronomy Field Laboratory, Bangladesh Agricultural University, Mymensingh during July to November 2016 to investigate the performance of separated tillers of hybrid rice variety Dhani Gold. The experiment comprised three times of tiller transplantation viz. 3, 4 and 5 week aged tiller seedlings and four levels of number of tiller seedlings transplanted hill-1 viz. 2, 3, 4 and 5 tiller seedlings hill-1 laid out in a split plot design with 3 replications. The highest plant height was obtained when 3-week aged tiller seedlings were transplanted at the rate of 3 tiller seedlings hill-1. The highest number of total tillers hill-1 and number of effective tillers hill-1 were found when 3-week aged tiller seedlings were transplanted with 5 tiller seedlings hill-1. The highest grains panicle-1 was obtained when 4-week aged tiller seedlings were transplanted with 5 tiller seedlings hill-1. The highest grain yield was found when 3-week aged tiller seedlings were transplanted with 5 tiller seedlings hill-1. The lowest grain yield was found when 5-week aged tiller seedlings were transplanted with 2 tiller seedlings hill-1 in hybrid rice variety Dhani Gold. Based on the findings of the present study it may be concluded that 3-week old tiller seedlings of Dhani Gold should be transplanted at the rate of 4 or 5 tiller seedlings hill-1 for higher yield. Thus present study confirms the potentiality of growing hybrid rice from separated tillers in case of unavailability of seedlings or to minimize the seed cost of high value hybrid rice seeds. J Bangladesh Agril Univ 17(4): 507–513, 2019

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DNA Fingerprinting and Diversity Analysis of BRRI Hybrid Varieties and their Corresponding Parents

Plant Tissue Culture and Biotechnology ◽

10.3329/ptcb.v21i2.10242 ◽

2011 ◽

Vol 21 (2) ◽

pp. 189-198

Author(s):

M.M. Islam ◽

M.E. Hoque ◽

S.M.H.A. Rabbi ◽

M.S. Ali

Keyword(s):

Microsatellite Markers ◽

Dna Fingerprinting ◽

Hybrid Rice ◽

Similarity Coefficient ◽

Diversity Analysis ◽

Allele Number ◽

Information Contents ◽

Polymorphic Bands ◽

Parental Lines ◽

Genetic Closeness

DNA fingerprinting and genetic diversity of four Bangladesh Rice Research Institute (BRRI) hybrid varieties and their parental lines were carried out. A total of 73 microsatellite markers were tested for screening the genotypes. Among the 73 amplified products, 37% had polymorphic bands showing 81 alleles. The number of alleles per locus ranged from two (RM10) to eight (RM327), where average allele number was 4.333. The Polymorphism Information Contents (PIC) lied between 0.337 (RM10) and 0.852 (RM327). RM327 was the most robust marker providing the highest PIC value (0.852). Pair-wise genetic dissimilarity coefficient interaction showed that BRRI hybrids two was the most genetically distant from each other whereas BRRI hybrids one, three, four and their respective parents were very close. Cluster analysis based on Dices similarity coefficient UPGMA system grouped BRRI hybrid and their parental lines into four major clusters at 0.41 cut off similarity coefficient. Four BRRI hybrid varieties grouped into four distinct clusters along with their component lines indicating their genetic closeness. Key words: Hybrid rice, Diversity analysis, Microsatellite markers, DNA fingerprinting D. O. I. 10.3329/ptcb.v21i2.10242 Plant Tissue Cult. & Biotech. 21(2): 189-198, 2011 (December)

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Fingerprinting of Rice Hybrids and their Parental Lines using Microsatellite Markers and their Utilization in Genetic Purity Assessment of Hybrid Rice

Research Journal of Seed Science ◽

10.3923/rjss.2009.40.47 ◽

2009 ◽

Vol 2 (3) ◽

pp. 40-47 ◽

Cited By ~ 6

Author(s):

P. Tamilkumar ◽

R. Jerlin ◽

N. Senthil ◽

K.N. Ganesan ◽

R.J. Jeevan ◽

...

Keyword(s):

Microsatellite Markers ◽

Hybrid Rice ◽

Genetic Purity ◽

Purity Assessment ◽

Parental Lines

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Application of herbicides on parental lines (A clearfield® and R) of hybrid rice at post-flowering stage for production

Australian Journal of Crop Science ◽

10.21475/ajcs.19.13.01.p1514 ◽

2019 ◽

Vol 13 (01) ◽

pp. 131-137

Author(s):

Vitor Henrique Vaz Mondo ◽

◽

Adriano Stephan Nascente ◽

Keyword(s):

Hybrid Rice ◽

Flowering Stage ◽

Parental Lines

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Population structure and association analysis of yield and grain quality traits in hybrid rice primal parental lines

Euphytica ◽

10.1007/s10681-016-1766-3 ◽

2016 ◽

Vol 212 (2) ◽

pp. 261-273 ◽

Cited By ~ 4

Author(s):

Yingheng Wang ◽

Yanmei Zheng ◽

Qiuhua Cai ◽

Changjian Liao ◽

Xiaohui Mao ◽

...

Keyword(s):

Population Structure ◽

Association Analysis ◽

Grain Quality ◽

Hybrid Rice ◽

Quality Traits ◽

Parental Lines

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Combining Ability and Heritability of Resistance to Early and Late Leafspot of Peanut1

Peanut Science ◽

10.3146/i0095-3679-13-1-4 ◽

1986 ◽

Vol 13 (1) ◽

pp. 10-14 ◽

Cited By ~ 8

Author(s):

W. F. Anderson ◽

J. C. Wynne ◽

C. C. Green ◽

M. K. Beute

Keyword(s):

Combining Ability ◽

Additive Genetic Variance ◽

Rank Correlation ◽

F1 Hybrids ◽

Cercospora Arachidicola ◽

F1 Hybrid ◽

Detached Leaf ◽

F2 Population ◽

Parental Lines ◽

High Level

Abstract Four parental lines with resistance to early leafspot caused by Cercospora arachidicola Hori and four parental lines with resistance to late leafspot caused by Cercosporidium personatum (Berk. & Curt.) Deighton and the F1 hybrid progeny from crosses between the two groups of parents were evaluated for resistance to both leafspot diseases in the greenhouse using a detached leaf technique. The subsequent F2 plants of all crosses were evaluated in the field for resistance to early leafspot in order to estimate combining ability effects for components of partial resistance and to identify parents useful in developing lines resistant to both diseases. General combining ability, attributed largely to additive genetic variance, accounted for the largest portion of the variability among the F1 and F2 generations for most parameters of resistance to both early and late leafspots. Reciprocal effects and heterosis toward the susceptible parents were also significant for parameters of resistance to the two pathogens. GP-NC 343 and FESR 5-P2-B1 were the best parents for incorporating genes for resistance to both early and late leafspots. Progenies of NC 17090 had a high level of resistance to late leafspot in detached leaf tests and progeny of PI 350680 had reduced defoliation from early leafspot in the field. Broad-sense heritabilities ranged from 0.2 to 0.4 for parameters of resistance to early leafspot estimated from the pooled variances of F2 plants of all crosses planted in the field. Parameters of resistance evaluated in the greenhouse for F1 hybrids were compared to parameters evaluated in the field for the F2 population by rank correlation of entry means. Latent period and sporulation of the fungus on detached leaves of F1 generation plants correlated (r = −0.46 and 0.54, respectively) with defoliation of F2 plants in the field.

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