scholarly journals Determination of Heterotic Groups and Heterosis Analysis of Yield Performance in indica Rice

Rice Science ◽  
2018 ◽  
Vol 25 (5) ◽  
pp. 261-269 ◽  
Author(s):  
Wang Yingheng ◽  
Cai Qiuhua ◽  
Xie Hongguang ◽  
Wu Fangxi ◽  
Lian Ling ◽  
...  
Keyword(s):  
Indica Rice ◽  
Heterotic Groups ◽  
Yield Performance

Heterotic groups of tropical indica rice germplasm

2014 ◽  
Vol 128 (3) ◽  
pp. 421-430 ◽  
Author(s):  
Kai Wang ◽  
Fulin Qiu ◽  
Wenceslao Larazo ◽  
Madonna Angelita dela Paz ◽  
Fangming Xie
Keyword(s):  
Indica Rice ◽  
Heterotic Groups ◽  
Rice Germplasm

Genetic diversity and structure of indica rice varieties from two heterotic pools of southern China and IRRI

2012 ◽  
Vol 10 (3) ◽  
pp. 186-193 ◽  
Author(s):  
Fangming Xie ◽  
Longbiao Guo ◽  
Guangjun Ren ◽  
Peisong Hu ◽  
Feng Wang ◽  
...  
Keyword(s):  
Genetic Diversity ◽  
Southern China ◽  
Indica Rice ◽  
Population Diversity ◽  
Rice Varieties ◽  
Heterotic Groups ◽  
Breeding Lines ◽  
Genetic Diversity And Structure ◽  
Grouping Method ◽  
Genetic Structures

Investigation of genetic diversity and the relationships among varieties and breeding lines is of great importance to facilitate parental selection in the development of inbred and hybrid rice varieties and in the construction of heterotic groups. The technology of single nucleotide polymorphism (SNP) is being advanced for the assessment of population diversity and genetic structures. We characterized 215 widely cultivated indica rice varieties developed in southern China and at the International Rice Research Institute (IRRI) using IRRI-developed SNP oligonucleotide pooled assay (OPA) to provide grouping information of rice mega-varieties for further heterotic pool study. The results revealed that the Chinese varieties were more divergent than the IRRI varieties. Two major subpopulations were clustered for the varieties using a model-based grouping method. The IRRI varieties were closely grouped and separated clearly from the majority of the Chinese varieties. The Chinese varieties were subclustered into three subgroups, but there was no clear evidence to separate the Chinese varieties into subgroups geographically, indicating a great degree of genetic integration of alleles and shared ancestries among those high-yielding modern varieties.

Determination of heterotic groups for tropical Indica hybrid rice germplasm

2013 ◽  
Vol 127 (2) ◽  
pp. 407-417 ◽  
Author(s):  
Fangming Xie ◽  
Zhizhou He ◽  
Manuel Q. Esguerra ◽  
Fulin Qiu ◽  
Vairamani Ramanathan
Keyword(s):  
Hybrid Rice ◽  
Heterotic Groups ◽  
Rice Germplasm ◽  
Indica Hybrid Rice

scholarly journals Yielding and its adaptability of several promising bulk cocoa clones

2005 ◽  
Vol 21 (1) ◽  
Author(s):  
Dedy Suhendi ◽  
Surip Mawardi ◽  
Hendro Winarno
Keyword(s):  
Statistical Analysis ◽  
Key Words ◽  
Yield Components ◽  
Good Yield ◽  
Block Design ◽  
Yield Performance ◽  
Combined Analysis ◽  
Planting Materials ◽  
Cocoa Yield

Yielding and its adaptability are considered to be an important criteria for clones recommendation. An experiment to evaluate yield and its adaptability of several promising bulk cocoa clones has been executed during 1996—2003 in three locations having different altitude and type of climate, consisted of Jatirono(450 m asl., B type of climate), Kalisepanjang (275 m asl., C type of climate) and Kalitelepak (145 m asl., B type of climate). Randomized completely block design (RCBD) was used in each location with 14 promising clones and four replications. Recommended clones of ICS 60 and GC 7 were used as standard. The promising clones were originated from mother trees selection with the main criteria of yield. Observations were conducted on yield and its components as well as bean characteristics. Determination of adaptability of each clone by using yield performance and its stability. Statistical analysis was done by using combined analysis. The results showed that KW 30 and KW 48 perform higher yield (2.3 ton/ha) than that of standard clone (1.7 ton/ha) as well as consistant yield stability between location and over years. There for, the two clones performed good adaptability. KW 30 and KW 48 also perform good yield components, and high percentage of fat content i.e 55%. So, those clones are potential to be recommended for commercial planting materials. Key words : bulk cocoa, yield, clone, stability, adaptability.

scholarly journals Analysis of the relationship between coefficients of relatedness and molecular similarity of parental forms with respect to the heterosis effect in maize

2013 ◽  
Vol 50 (1) ◽  
pp. 39-52
Author(s):  
Agnieszka Tomkowiak ◽  
Zbigniew Broda ◽  
Krzysztof Moliński ◽  
Marta Molińska-Glura ◽  
Józef Adamczyk
Keyword(s):  
Molecular Markers ◽  
Molecular Similarity ◽  
Pedigree Analysis ◽  
Molecular Techniques ◽  
Pedigree Information ◽  
Genetic Purity ◽  
Heterotic Groups ◽  
Heterosis Effect ◽  
Selection Of

SUMMARY Within the last twenty years studies have been conducted at many research centers with the aim of dividing breeding materials into heterotic groups based on molecular markers. Molecular techniques make it possible to study the genetic purity of inbred lines, determine their genetic variability and classify breeding materials for which no information is available on their origin. This study aims to investigate relationships between coefficients of relatedness (pedigree analysis) and molecular similarity estimated on the basis of AFLP and RAPD molecular markers, between parental forms of F1 maize hybrids. Determination of these relationships will make it possible to establish a hierarchy of importance for applied methods concerning selection of parental components for heterotic crossings based on the degree of relatedness and genetic similarity. As a result of the experiment it was shown that in the case of incomplete pedigree information, in the selection of parental components for crossings we may use information concerning molecular similarity determined using AFLP markers and the Jaccard index, which to the least degree differentiates matrices of AFLP and RAPD molecular similarity.

Determination of some minerals and β-carotene contents in aromatic indica rice (Oryza sativa L.) germplasm

2016 ◽  
Vol 191 ◽  
pp. 2-6 ◽  
Author(s):  
N. Renuka ◽  
Sarika V. Mathure ◽  
Rahul L. Zanan ◽  
Ratnakar J. Thengane ◽  
Altafhusain B. Nadaf
Keyword(s):  
Oryza Sativa ◽  
Oryza Sativa L ◽  
Indica Rice ◽  
Β Carotene

scholarly journals Determination of optimum and economic doses of fertilizers for rice production in saline and charlands ecosystem

2017 ◽  
Vol 42 (3) ◽  
pp. 521-529
Author(s):  
MN Islam ◽  
PK Saha ◽  
S Islam
Keyword(s):  
Grain Yield ◽  
Cropping Systems ◽  
Block Design ◽  
Wet Season ◽  
Yield Performance ◽  
Fertilizer Recommendation ◽  
Randomized Complete Block Design ◽  
On Farm ◽  
Absolute Control

On-farm experiment was carried out for four consecutive seasons: Boro (dry season) 2011-12, Transplanted Aman (T. Aman, wet season) 2012, Boro 2012- 13 and T. Aman 2013 at the farmer’s field in Londonipara, Sonagazi, Feni to develop fertilizer recommendation for rice-based cropping systems in saline and charland ecosystem in Bangladesh. The experiments were designed with eight treatments and laid out in randomized complete block design (RCBD) with three replications. The treatment combinations were: T1 = 100% NPKSZn (STB), T2 = T1 + 25% N, T3 = T1 + 25% NP, T4 = T1 + 25% NK, T5 = T1 + 25% PK, T6 = T1 + 25% NPK, T7 = 75% of T1 and T8 = Absolute control. Results indicated that application of different fertilizers significantly affected the grain yield at all of the seasons. In Boro 2011-12, the highest grain yield was found in treatment T1 (100% STB) while T3 (T1 + 25% NP) gave highest grain yield in Boro 2012-13. Statistically identical yield was observed in Boro 2011-12 with all treatments except control (T8). Highest grain yield was found with T6 (T1 + 25% NPK) treatments in both of T. Aman 2012 and 2013 seasons. Annual straw yield was found more in T6 (T1 + 25% NPK) treatment. All the treatment combinations gave significantly higher yield over the control in all seasons. However, on the basis of yield performance, economic analysis and nutrient absorption, the treatment T6 = T1 + 25% NPK (N225P30K17.5S15Zn4 for Boro and N121P15K9S10Zn3 for T. Aman) performed the best among the treatments.Bangladesh J. Agril. Res. 42(3): 521-529, September 2017

scholarly journals The SEEDLING BIOMASS 1 allele from indica rice enhances yield performance under low‐nitrogen environments

2021 ◽  
Author(s):  
Jing Xu ◽  
Lianguang Shang ◽  
Jiajia Wang ◽  
Minmin Chen ◽  
Xue Fu ◽  
...  
Keyword(s):  
Indica Rice ◽  
Yield Performance ◽  
Seedling Biomass ◽  
Low Nitrogen

scholarly journals Mutation determination of rice by using RAPD primers

2019 ◽  
Vol 9 (1) ◽  
pp. 1-7
Author(s):  
MSH Bhuiyan ◽  
MA Malek ◽  
SH Bhuiyan ◽  
M Islam ◽  
ABA Hassan
Keyword(s):  
Indica Rice ◽  
Reaction Conditions ◽  
Taq Dna Polymerase ◽  
Rapd Profile ◽  
Final Volume ◽  
Desirable Outcome ◽  
Genetic Sequences ◽  
Dna Template ◽  
Biology Laboratory

PCR is a powerful tool for the amplification of genetic sequences but sometimes, even though using an established PCR protocol that had been optimized and successful for the amplification of a particular DNA segment, use of that same protocol on a different region can result in a less than desirable outcome. Therefore, an experiment was conducted at Molecular biology laboratory of Malaysian Nuclear Agency during December 2016 to January 2017 used seeds of 6 indica rice cultivars. To conduce RAPD experiments for the rice species it was established the following reaction conditions for the final volume of 20 μl where 0.1 unit of Taq DNA polymerase, 0.4 μl of each dNTP, 2.5 mM MgCl2, 1 μl primer and 2.0 μl of DNA template. From this experiment, it is clear that after mutation the parent MR219 performed some genetic modification and produce genetically different variety namely NMR151, NMR152, ML3, ML10 and ML30. These mutant varieties have two different groups based on their mutation source and it is clear enough from their RAPD profile. Int. J. Agril. Res. Innov. & Tech. 9 (1): 1-7, June, 2019

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