scholarly journals Inheritance of some quantitative traits in the hybrid generations ‘Kuboyar × Gagat’

2021 ◽  
pp. 9-16
Author(s):  
P. I. Kostylev ◽  
E. V. Krasnova ◽  
G. A. Sirapionov
Keyword(s):  
Plant Height ◽  
Quantitative Traits ◽  
Grain Weight ◽  
Panicle Length ◽  
Rice Varieties ◽  
Partial Dominance ◽  
Kernel Length ◽  
Allelic Differences ◽  
White Grain ◽  
1000 Grain Weight

Rice is an important food for humans. In the world, for food purposes white-grain rice varieties are mainly used, but there are varieties in which kernel pericarp is of red, brown, purple or black color. Such rice is more beneficial for health promotion. The current paper has presented the results of genetic analysis of the inheritance of a number of variable quantitative traits in rice hybrid populations of the first and third generations obtained by the hybridization of the varieties ‘Kuboyar’ and ‘Gagat’. The variety ‘Kuboyar’ is medium-sized, with a compact erect panicle, an oval caryopsis and white pericarp. The variety ‘Gagat’ is tall, with a long drooping panicle, a long kernel and black pericarp. The work was carried out on the territory of the OP ‘Proletarskoe’ of the Rostov region in 2018–2020. The analysis of the inheritance of some quantitative traits that have a direct impact on the rice productivity made it possible to establish new inheritance regularities. According to the trait ‘plant height’ there has been identified partial dominance of the largest values of the trait in the hybrids F2 and F3. Allelic differences of 3 pairs of genes were identified in parental forms. The trait ‘panicle length’ showed overdominance of the trait in F2, it was absent in F3, and there were digenic differences in parental forms. The trait ‘number of spikelets per panicle’ demonstrated overdominance of large values and positive transgression. According to the trait ‘1000-grain weight’, the hybrids of both generations were split by the digenic scheme in a ratio of 1:4:6:4:1. There was no dominance in the trait ‘kernel length’; the initial varieties had differences in 2 pairs of genes. According to the trait ‘kernel width’, there was identified incomplete dominance of smaller values, and there was monohybrid split. There have been selected the best plants F3 with a black pericarp, average values of the traits ‘plant height’, ‘panicle length’, ‘1000-grain weight’ and an increased number of grains per panicle for the further breeding process.

scholarly journals Comparison of the F2 and F3 traits’ inheritance by the rice hybrid ‘Kontro x Kuboyar’

2021 ◽  
pp. 8-14
Author(s):  
P. I. Kostylev ◽  
A. V. Aksenov ◽  
Е. V. Krasnova
Keyword(s):  
Quantitative Traits ◽  
Agricultural Research ◽  
Upland Rice ◽  
Kernel Weight ◽  
Panicle Length ◽  
Rice Varieties ◽  
Partial Dominance ◽  
Kernel Length ◽  
Rice Hybrid ◽  
Negative Dominance

Rice is a very moisture-loving crop, therefore it suffers greatly from drought. However, in the world in recent years, there is an increasing shortage of fresh water, which makes the use of upland rice relevant. Therefore, rice varieties with a reduced demand for water supply, developed as a result of breeding work, are more profitable for agricultural producers than agrotechnical or reclamation measures. It is much cheaper to produce such rice with periodic irrigation. The purpose of the current study was to analyze genetically the main quantitative traits of the rice hybrid ‘Kontro x Kuboyar’ with the selection of the best forms for subsequent breeding for drought resistance. The study was carried out in 2019–2020 on the rice plots of the special subdivision ‘Proletarskoye’ belonging to of the Agricultural Research Center “Donskoy” in the Rostov Region. In the course of the study there has been made a genetic analysis of a number of quantitative traits that determine rice productivity. The character of traits’ inheritance in the second and third generations was identical. The inheritance of the trait ‘panicle length’ was characterized by partial negative dominance and monogenic differences in parental varieties. The trait ‘number of spikelets per panicle’ was inherited according to the type of negative dominance of smaller values of the trait and was determined by the interaction of two pairs of genes. The trait ‘1000-kernel weight’ was identified by the partial dominance of large values of the trait and monogenic differences in the parental varieties. The traits ‘kernel length’ and ‘kernel width’ were split according to the monohybrid scheme 1:2:1, and there was no dominance. From the third generation, the best early-maturing forms with optimal values of the traits ‘plant height’, ‘panicle length’, ‘1000-kernel weight’ and ‘the best kernel percentage per panicle’ were selected for the subsequent breeding of drought-resistant rice varieties.

scholarly journals Performance of Transplant Aus Rice Varieties under Different Nitrogen Management Practices

2021 ◽  
pp. 52-62
Author(s):  
Md. Omar Faruk ◽  
A. S. M. Iqbal Hussain ◽  
Md. Abu Yusuf ◽  
Md. Nazmul Hasan Mehedi
Keyword(s):  
Grain Yield ◽  
Leaf Area Index ◽  
Leaf Area ◽  
Plant Height ◽  
Nitrogen Management ◽  
Grain Weight ◽  
Panicle Length ◽  
Rice Varieties ◽  
Area Index ◽  
1000 Grain Weight

Management of applied nitrogen in rice field is one tool that could lead to increase in rice yield, but often ignored by most farmers. The experiment was carried out from April to July 2015 at the Agronomy Field Laboratory of Patuakhali Science and Technology University, Dumki, Patuakhali to find out the influence of different nitrogen management and variety on the yield performance of transplant Ausrice. The study consisted of four levels of nitrogen viz. Control (without N), 30 kg N ha-1, 60 kg N ha-1 and urea super granule @ 52 kg N ha-1 and four Transplanted aus rice varieties viz. KaliHitta, ChaitaBoro, Abdul Hai and Gota IRRI, and was laid out in a split-plot design with three replications. The levels of nitrogen were assigned in the main plot and varieties were allocated in the sub-plots. Nitrogen management, variety and their interactions exerted significant (P ≤ 0.05) influence on plant characters, yield contributing characters and yield of transplanted Aus rice. In the case of nitrogen management, the tallest plant was 161.60 cm, maximum leaf area index(2.97, the highest number of effective tillers hill-115, longest panicle 24.30 cm with the maximum number of filled grains as94.73, 1000-grain weight gave 29.97 g. Grain yield of 2.48 t ha-1 were obtained from USG @ 52 kg N ha-1 and the shortest plant height of 136.90 cm with lowest leaf area index of 1.78, lowest number of effective tillers hill-1 (8.43), shortest panicle (18.84 cm) with the lowest numbers of filled grains panicle-1 (53.18), 1000-grain weight (24.33 g) and grain yield (1.40 t ha-1) were obtained in control (N1=O, kg N ha-1). Among the varieties, ChaitaBoro gave the tallest plant height (151.60 cm) and maximum leaf area index (2.54). While the highest number of effective tillers hill-1 (12.20), longest panicle (22.42 cm) with the maximum number of filled grains panicle-1 (73.50), highest 1000-grain weight (27.41 g) and highest grain yield (2.39 t ha-1) were recorded from Gota IRRI than other varieties. In case of interaction, Gota IRRI Fertilized with USG at 52 kg N ha-1 produced the highest number of effective tillers hill-1 (16.87), panicle length (25.13 cm), number of grains panicle-1 (105.70) and grain yield (3.13 t ha-1). The lowest number of effective tillers hill-1 (8.13), lowest panicle length (17.47 cm) with minimum numbers of filled grains 47.67) and grain yield (1.12 t ha-1) were produced by the interaction of control (N1=O, kg N ha-1) and Kali Hitta. So, cultivation of transplant Aus rice (Gota IRRI) appeared to be the best performance with USG @ 52 kg N ha-1 and recommended to the end users.

scholarly journals Pertumbuhan dan Produktivitas 5 Varietas Unggul Baru Padi di Lahan Bukaan Baru Kabupaten Boven Digoel

2021 ◽  
Vol 23 (1) ◽  
pp. 6
Author(s):  
Fajriyatus Shoidah ◽  
Adnan Adnan
Keyword(s):  
Soil Fertility ◽  
Plant Height ◽  
Block Design ◽  
Grain Weight ◽  
Panicle Length ◽  
Randomized Complete Block Design ◽  
1000 Grain Weight

<p>New wetlands field generally has low productivity, so a technology is needed for improve productivity. New Superior Variety (NSV) is a technology that is considered easy to be adopted by farmers, so knowing a NSV that is able to adapt to the characteristics and conditions of new wetlands field is a must. The study of adaptive NSV on new wetlands field in Boven Digoel Regency is still limited so that the NSV recommendation for farmers is also still limited. The purpose of this study was to examine the growth and production of new superior varieties on the new wetlands fields in Boven Digoel Regency. The study was conducted on new wetlands in Asiki Village, Jair District during April-August 2019. Randomized Complete Block Design was employed with 3 replications using Inpari 36, Inpari 37, Inpago Rindang 1, Inpago Rindang 2 dan Inpara 8. The results showed different varieties perform different agronomy characters observed (plant height, number of tillers, panicle length, number of grains per panicle, filled grain, per panicle, empty grain per panicle and 1000 grain weight). Inpari 37 produced 5.3 ton/ha Dried Unhulled Rice, the highest production compared to other varieties, so that it could potentially be developed in Boven Digoel’s new wetlands field. Productivity may still be increased by improving soil fertility conditions.</p>

scholarly journals Yield contributing characters of BRRI dhan49 as influenced by integrated use of banana leaves with inorganic potassium fertilizer

2020 ◽  
Vol 8 (2) ◽  
pp. 272
Author(s):  
Md. Abdul Mannan ◽  
Md. Abul Hashem ◽  
Md. Sohanur Rahman ◽  
Fakhar Uddin Talukder ◽  
Md. Kamrujjaman
Keyword(s):  
Plant Height ◽  
Grain Weight ◽  
Growth And Yield ◽  
Panicle Length ◽  
Potassium Fertilizer ◽  
Science Field ◽  
Straw Yield ◽  
Grain Yields ◽  
Banana Leaves ◽  
1000 Grain Weight

A field experiment was carried out at the Soil Science Field Laboratory of Bangladesh Agricultural University (BAU), Mymensingh during aman season of 2014 to study the integrated use of banana leaves with inorganic potassium fertilizer on the growth and yield of BRRI dhan49 following Randomized Complete Block Design (RCBD) with eight treatments and three replications. The highest plant height (85.55cm), panicle length (21.46cm), number of effective tillers hill-1 (11.54), number of filled grains panicle-1 (149.53), 1000-grain weight (21.85gm), grain yields (5.66 t ha-1) and straw yield (6.81 t ha-1) were obtained in the treatment T3 and the lowest plant height (77.10cm), panicle length (18.85cm), number of effective tillers hill-1 (8.64), number of filled grains panicle-1 (112.11), 1000-grain weight (19.96gm), grain yields (3.50 t ha-1) and straw yield (4.73 t ha-1) were recorded in the control. It can be recommended to integrated use of 50% K from banana leaves+50% K from MoP on growth and yield of BRRI dhan49.   

scholarly journals GENETIC VARIATION, CORRELATION AND SELECTION INDICES IN ADVANCED BREEDING LINES OF RICE (Oryza sativa L.)

2013 ◽  
Vol 20 (1) ◽  
pp. 25-32 ◽  
Author(s):  
S. H. Habib ◽  
K. M. Iftekharuddaula ◽  
M. K. Bashar ◽  
Khaleda Akter ◽  
M. K. Hossain
Keyword(s):  
Grain Yield ◽  
Plant Height ◽  
Relative Efficiency ◽  
Correlation Coefficients ◽  
Grain Weight ◽  
Panicle Length ◽  
Breeding Lines ◽  
Selection Indices ◽  
Efficiency Of Selection ◽  
1000 Grain Weight

Forty advanced breeding lines of rice were studied during T Aman season (rainfed ecosystem) for finding out selection indices, variability and character association for grain yield and its components. All the tested characters were found showing significant variation. The highest genotypic, environmental and phenotypic variances were found in filled grains/panicle followed by plant height. High heritability associated with high genetic advance were obtained in panicles/hill, plant height, filled grains/panicle, 1000-grain weight and grain yield. Genotypic correlation coefficients were higher than the corresponding phenotypic correlation coefficients in most of the cases. Panicle length, panicles/hill and filled grains/panicle showed significant positive correlation with grain yield. Path analysis revealed that filled grains/panicle, panicles/hill and 1000-grain weight had positive and highest direct effects on grain yield. Moreover, panicle length had highest indirect effect on grain yield through filled grains/panicle. Discriminant function analysis revealed that a progressive increase in the efficiency of selection was observed with the inclusion of additional character in the selection index. Among the single variable indices, filled grains/panicle showed maximum relative efficiency over the straight selection for grain yield. The highest relative efficiency was observed with index involving seven characters, days to maturity + panicle length + panicles/hill + plant height + filled grains/panicle + 1000-grain weight + yield (t/ha). However, some of 3-traits, 4- traits, 5- traits, and 6- traits indices were also equally good.DOI: http://dx.doi.org/10.3329/bjpbg.v20i1.17015

scholarly journals Studies on Correlation and Path Coefficient Analysis in Hybrid Rice (Oryza sativa L.) for Yield and Quality Traits

2021 ◽  
Vol 12 (5) ◽  
pp. 496-505
Author(s):  
M. Vennela ◽  
◽  
B. Srinivas ◽  
V. Ram Reddy ◽  
N. Balram ◽  
...  
Keyword(s):  
Grain Yield ◽  
Path Analysis ◽  
Plant Height ◽  
Grain Weight ◽  
Spikelet Fertility ◽  
Path Coefficient ◽  
Quality Traits ◽  
Path Coefficient Analysis ◽  
Kernel Length ◽  
1000 Grain Weight

The present investigation was carried out at Regional Agricultural Research Station, Polasa, Jagtial, Telangana state, India to study the correlation and path coefficient analysis towards yield, physical and chemical quality traits in 46 genotypes including two checks in Randomized Block Design with two replications during kharif, october, 2019. Association of yield and yield components and among grain yield characters makes us to understand their relationship towards selecting a high yielding and good quality varieties. The result from the study revealed that all the nineteen characters studied has shown a great range of variation for correlation and path analysis. The character association studies in this experiment revealed that the trait grain yield plant-1 had showed significant positive correlation with plant height, spikelet fertility, 1000 grain weight, milling %, hulling %, kernel length and kernel breadth whereas it showed negative and non-significant association with days to 50% flowering. The path analysis studies revealed that kernel length was the major contributor for grain yield plant-1 followed by plant height, spikelet fertility, number of grains per panicle, 1000 grain weight, milling %, gel consistency, amylose content and alkali spreading value. These characters showed direct positive effects for grain yield plant-1. From the study it can be concluded that the above characters can be used directly as the selection criteria in any rice yield improvement breeding programmes.

scholarly journals Genetic interrelationship among yield and its components in rice hybrids

2019 ◽  
Vol 48 (4) ◽  
pp. 1207-1213
Author(s):  
Md Jamil Hasan ◽  
M Umma Kulsum ◽  
Shaikh Jafar Mohiuddin ◽  
Md Zahid-AL-Rafiq
Keyword(s):  
Plant Height ◽  
Direct Effect ◽  
Rice Yield ◽  
Grain Weight ◽  
Path Coefficient ◽  
Panicle Length ◽  
Spikelet Sterility ◽  
Significant Positive Association ◽  
Days To Maturity ◽  
1000 Grain Weight

The present investigation was conducted to elucidate the interrelationship among various yield and yield contributing traits. Among the traits plant height, days to 50% flowering, days to maturity, filled grain per panicle and spikelet sterility showed high genotypic variance. Effective tillers per hill, filled grain per panicle, spikelet sterility had high genotypic coefficient of variation with high heritability and high genetic advance per cent of mean. Effective tillers per hill, panicle length, filled grain per panicle and 1000-grain weight exhibited significant positive association with grain yield. Path coefficient analysis also revealed that plant height, effective tillers per hill, panicle length and 1000-grain weight had higher direct effect on rice yield (t/ha). Days to 50% flowering, days to maturity and spikelet sterility possessed moderate to low negative direct effect on rice yield. All together with the genetic variability, correlation and path analysis revealed that plant height, effective tillers per hill, panicle length, filled grain per panicle and 1000-grain weight were the most important yield component in rice hybrids.

scholarly journals Genetics of some quantitative traits of the rice hybrid CR-1009 (SUB-1) × Novator

2018 ◽  
pp. 44-48
Author(s):  
P. I. Kostylev ◽  
Е. V. Krasnova
Keyword(s):  
Plant Height ◽  
Quantitative Traits ◽  
Kernel Weight ◽  
Panicle Length ◽  
Parental Form ◽  
Wide Range ◽  
Rice Hybrid ◽  
Allelic Differences ◽  
Spikelets Per Panicle ◽  
Yield Structure

Quantitative traits which are characterized by a wide range of variability in different locations are of great importance for produc­tivity formation. They are plant height, panicle length, number of spikelets and kernels per panicle, 1000-kernel weight, etc. The study of genetic basis of quantitative traits of rice, which are the main elements of yield structure, is an important problem and its solution is necessary to speed up breeding process. The article deals with the establishing of inheritance type, quantity of allelic variants of genes, which participate in determination of some quantitative traits of the rice hybrid obtained from hybridization of the varieties “CR-1009 (Sub-1)” and “Novator”. The genetic analysis of trait splitting has been carried out by the computer program “Polygen A”. The inheritance of the trait “plant height” occurred was of the type of incomplete domination of large values of the trait, the parental forms varied in two pairs of genes. By the panicle length, monogenic differences of the crossed varieties were observed. According to the number of spikelets per panicle, full dominance of the greater value of the trait was identified. The interaction of two genes was identified, with each parental form having both recessive and dominant alleles, but in different loci. Estimating number of kernels per panicle, there were allelic differences in two loci and trait splitting was in a ratio of 9 : 6 : 1. Trait splitting along the length and width of the spikelet was transgressive and was characterized by the dominance of smaller values of the trait. According to 1000-kernel weight, incomplete dominance of smaller values of the trait and monogenic differences of the initial parental forms have been estab­lished. According to kernel weight per panicle, the digenous differences of the parental forms and the splitting in a ratio of 15 : 1 were identified. The information that differences are determined by two pairs of main genes can be used in practical breeding. It will allow reducing the amount work to obtain recombinants with the desired combination of characteristics.

scholarly journals Morphological characterization of Katarni rice (Oryza sativa L.) derived backcross population for yield and its contributing traits

2019 ◽  
Vol 56 (4) ◽  
pp. 368-374
Author(s):  
Kumar Vaibhav ◽  
Satyendra ◽  
Anand Kumar ◽  
Suresh Prasad Singh ◽  
Mankesh Kumar
Keyword(s):  
Plant Height ◽  
Coefficient Of Variation ◽  
Morphological Characterization ◽  
Grain Weight ◽  
Path Coefficient ◽  
Backcross Population ◽  
Kernel Length ◽  
Backcross Breeding ◽  
1000 Grain Weight

The aim of backcross breeding is the introgression of a certain trait of interest in a popular variety from a suitable donor variety. Morphological characterization of backcross derived line is a crucial step in backcross breeding programme. Present investigation was framed for the morphological characterization of advance backcross population, developed to introgress semi-dwarf and early maturing traits of Rajendra Sweta and BPT5204 into the background of tall, late maturing scented Katarni rice. The results indicated a significant decrease in the plant height and days of 50 % flowering in the backcross derived lines with respect to Katarni rice. Higher values of phenotypic coefficient of variation (PCV) than the genotypic coefficient of variation (GCV) for all character indicated environmental influence in the development of all characters. High heritability with high genetic advance as percent of mean was observed for 1000 grain weight and plant height. Highly significant and positive correlation with yield per plant was exhibited by traits like 1000 grain weight and leaf aroma. Result of path coefficient analysis indicated direct positive effect of characters like L/B ratio, kernel length and 1000 grain weight on grain yield per plant.

scholarly journals Genetic studies of yield and quality traits in aromatic rice genotypes through Hayman's approach

2019 ◽  
Vol 56 (4) ◽  
pp. 361-367
Author(s):  
Dilruba A Bano ◽  
S P Singh
Keyword(s):  
Plant Height ◽  
Grain Weight ◽  
Aromatic Rice ◽  
Quality Traits ◽  
Panicle Length ◽  
Partial Dominance ◽  
Yield And Quality ◽  
Diallel Mating Design ◽  
Days To Maturity ◽  
Rice Genotypes

Hayman's approach analysis was employed to estimate genetic components of variation in aromatic rice genotypes for yield and quality traits by following 8 x 8 one way diallel mating design. Vr-Wr graphs were plotted for the traits viz., days to 50 % flowering, days to maturity, plant height at maturity, main panicle length, effective tillers per plants, 100 grain weight and yield per plant, that exhibited significant deviation of regression coefficient 'b' from zero, irrespective of significance of 't2' or deviation of 'b' from unity. Vr-Wr graph revealed over dominance for the traits viz., plant height, main panicle length, effective tillers per plant and yield per plant. Traits like days to 50 % flowering, days to maturity and 100 grain weight revealed partial dominance. Graphical and component analysis revealed over dominance type of intra allelic interaction for most of the yield and yield contributing traits. However, both additive and dominance types of genetic effects were observed for most of yield and quality traits.

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