Analysis of yield factors in segregating populations and their implications in selection of flax (Linum usitatissimum)

1983 ◽  
Vol 25 (5) ◽  
pp. 495-501 ◽  
Author(s):  
S. K. Rao ◽  
S. P. Singh
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Linum Usitatissimum ◽  
Seed Weight ◽  
Correlation Coefficients ◽  
Positive Association ◽  
Direct Selection ◽  
Linum Usitatissimum L ◽  
Selection Indices ◽  
Efficient Prediction

Correlation coefficients were calculated in all possible combinations between days to maturity, plant height, number of capsules, primary branches, secondary branches, average number of seeds per capsule, 1000-seed weight, and seed yield per plant in 48 F3 populations of flax (Linum usitatissimum L.). None of these attributes had negative association with seed yield. The majority of the yield components had a strong positive association with seed yield and the correlation coefficient of plant height with seed yield was negligible. Multiple regression analysis revealed that the regression equation involving number of secondary branches and number of capsules per plant had efficient prediction power. Path analysis studies also revealed that number of capsules followed by secondary branches and 1000-seed weight were the major components influencing seed yield. Selection indices based on primary branches, secondary branches, number of capsules, 1000-seed weight, and seed yield per plant were 203.83% superior to direct selection for seed yield.

EFFECT OF SEEDING RATE ON PLANT AND SEED CHARACTERISTICS OF NEW FLAX CULTIVARS

1989 ◽  
Vol 69 (3) ◽  
pp. 791-795 ◽  
Author(s):  
G. H. GUBBELS ◽  
E. O. KENASCHUK
Keyword(s):  
Iodine Number ◽  
Plant Height ◽  
Seed Yield ◽  
Linum Usitatissimum ◽  
Seed Weight ◽  
Oil Content ◽  
Seeding Rate ◽  
Linum Usitatissimum L ◽  
Volume Weight ◽  
Seed Characteristics

Five flax (Linum usitatissimum L.) cultivars, Dufferin, McGregor, Linott, NorLin and NorMan were grown in the field in 1985, 1986 and 1987 at seeding rates of 200, 400, 600 and 800 seeds m−2. Averaged over all cultivars and years, as seeding rate increased from 200 to 800 seeds m−2, maturity was hastened 2.1 d, seed weight decreased 0.16 g 1000−1 seeds, oil content decreased 0.6%, iodine number decreased 1.3 units and volume weight was not markedly changed. Lodging increased and basal branching decreased from 1.68 to 0.18 branches per plant as seeding rate increased. Plant height increased 0.6 cm from the 200 to the 400 seeds m−2 rate then decreased 1.8 cm from the 400 to the 800 seeds m−2 rate. Seed yield increased from 110 to 124 g m−2 as seeding rate increased from 200 to 600 seeds m−2, then decreased to 121 g m−2 at 800 seeds m−2. Although yields of the five cultivars varied somewhat in their response to seeding rate and year, most yielded near optimum at the 600 seeds m−2 seeding rate.Key words: Flax, Linum usitatissimum L., seeding rate, lodging

scholarly journals Discriminant function analysis for opium and seed yield in opium poppy (Papaver somniferum L.)

Genetika ◽  
2008 ◽  
Vol 40 (2) ◽  
pp. 109-120
Author(s):  
H.K. Yadav ◽  
S. Shukla ◽  
S.P. Singh
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Function Analysis ◽  
Positive Association ◽  
Papaver Somniferum ◽  
Yield Component ◽  
Opium Poppy ◽  
Dual Purpose ◽  
Single Character ◽  
Selection Indices

Opium poppy (Papaver somniferum L.) is an important medicinal plant of pharmacopoel uses. Opium latex and its derivatives are used in different medicines as analgesic, narcotic, sedative, sudorific, hyponitic, antispasmodic, ant diarrhea and cough etc. Genetic improvement in opium and seed yield, component breeding is important and selection based on multiple characters is more beneficial in developing desired plant types. Therefore the present study was made on group of 22 strains of opium poppy to find out variability and suitable selection indices for opium and seed yield. Heritability in broad sense was high for capsule weight/plant, plant height, capsule length, stem diameter and opium yield. The discriminant functions based on single character were less efficient while on the basis of combination it was in general more efficient. The comparison of different functions revealed that capsule weight/plant, capsule length, plant height are major yield component and thus practicing selection for attainment of high opium and seed yield lines, maximum weight age could be given to these characters. The positive association of opium yield and seed yield suggested that by adopting suitable component breeding and selection, a dual-purpose variety (opium and seed yield) may be developed.

scholarly journals Studies on Correlation and Path Analysis in Linseed (Linum usitatissimum L.) Over Locations in Mid-hills of North-Western Himalayas

2021 ◽  
Author(s):  
Garima Thakur ◽  
Satish Paul ◽  
Uttam Chandel ◽  
Ronika Thakur
Keyword(s):  
Grain Yield ◽  
Seed Yield ◽  
Linum Usitatissimum ◽  
Seed Weight ◽  
Harvest Index ◽  
Significant Positive Correlation ◽  
Agricultural Research ◽  
Positive Correlation ◽  
Linum Usitatissimum L ◽  
Important Trait

Background: Seed yield is a very important trait for selection but shows low heritability and hence is difficult to improve. Since the productivity of linseed (Linum usitatissimum L.) in India as well as Himachal Pradesh is low in comparison to other major linseed growing countries and states, improvement in cultivars for grain yield is a must. Therefore, the present study was aimed for studying the character associations in linseed genotypes for seed yield over locations. Method: The experiment was conducted during rabi 2019-2020. The experimental material for the present investigation comprised of 52 linseed genotypes grown over three locations in Himachal Pradesh i.e. Linseed Experimental Farm, CSK HPKV, Palampur (1290 m amsl), Shivalik Agricultural Research and Extension Centre, Kangra (700 m amsl) and Hill Agricultural Research and Extension Centre, Dhaulakuan (468 m amsl). Randomized block design with three replications was used. Phenotypic and genotypic correlation coefficients were worked out as per the procedure outlined by Burton and De Vane (1953) and Johnson et al. (1955). Direct and indirect effects of component traits on grain yield were worked out using correlation coefficient of various traits as suggested by Wright (1921) and elaborated by Dewey and Lu (1959). Result: Correlation studies indicated highly significant positive correlation for seed yield with 1000 seed weight (0.965**) followed by harvest index (0.801**), secondary branches (0.585**) and a significant correlation with biological yield (0.269**). Seed yield exhibited a non-significant positive correlation with seeds per capsule. However, a negative significant correlation was observed for seed yield with days to 50 per cent flowering and number of primary branches. The path coefficient analysis indicated that 1000 seed weight exhibited maximum positive direct effect with seed yield (0.741) while others had a low direct effect. The significant positive correlation of number of secondary branches and harvest index with seed yield was mainly due to indirect effect via 1000 seed weight indicating that 1000 seed weight is the most important trait for the improvement of grain yield in linseed as per the present study.

scholarly journals CREATION OF LINUM USITATISSIMUM INITIAL MATERIAL WITH MARKER SIGN – YELLOW-COLORED SEEDS

2021 ◽  
Vol 3 (27) ◽  
pp. 135-143
Author(s):  
V.P. Ponazhev ◽  
Keyword(s):  
Seed Yield ◽  
Linum Usitatissimum ◽  
Seed Weight ◽  
Seed Mass ◽  
Point Of View ◽  
Breeding Value ◽  
Initial Material ◽  
Standard Variety ◽  
Fiber Flax ◽  
Linum Usitatissimum L

Creation of the initial material of fiber flax (Linum usitatissimum L.) with marker signs is a promising direction of breeding, which determines the efficiency of breeding varieties with improved properties. The purpose of the research was to create initial flax material for obtaining seeds with a marker sign (yellow color) and increased weight. The studies were carried out at the Federal Research Center for Bast Fiber Crops in 2015–2018. In our work, we used flax varieties ‘Smolich’, ‘Antey’, ‘C-108’, as well as forms obtained from these varieties. These varieties were used as control. Nurseries were laid under conditions of a leveled agricultural background. Seeds were sown in a square way (2.5×2.5 cm). The experiments were conducted according to the current methods, including phytopathological testing. Soil – sod-podzolic, medium loamy, cultivated. Selyaninov Hydrothermal Coefficient (HTC) in 2015 was 1.3; in 2016 – 2.2; in 2017 – 1.8; in 2018 – 1.3. During the flax plants selection, we obtained three forms with yellow-colored seeds. Yellow-seeded form No. 1 was valuable from the breeding point of view. It exceeded standard variety ‘Smolich’ in seed weight by 0.8 mg (16.0%), in seed yield – by 0.06 t/ha (9.8%). Form No. 1 belongs to the improved fiber flax line. Form No. 3 had a higher seed mass (5.6 mg) compared to standard variety ‘C-108’. In terms of seed yield and 1000-seed weight, this form exceeded the standard by 0.08 t/ha or 14.8% and 0.49 g or 10.6%, respectively. Form No. 3 is a breeding material for creating varieties of bilateral use. Form No. 2 had signs of the oil flax line. It exceeded standard variety ‘Antey’ in seed yield by 0.18 t/ha (40%); 1000-seed weight – by 0.53 g (11.2%). The created material has a breeding value. It was transferred to the bioresource collection of flax for its replenishment, to the bank of the characteristic collection and was additionally included in the breeding process.

scholarly journals Studies on variability, heritability and genetic advance for yield and yield contributing characters in french bean (Phaseolus vulgaris L.) germplasm under tarai region of Uttarakhand

2017 ◽  
Vol 9 (4) ◽  
pp. 1926-1930
Author(s):  
Ankit Panchbhaiya ◽  
Dhirendra Kumar Singh ◽  
Vinod Jatav ◽  
Sanganamoni Mallesh ◽  
Priyanka Verma
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Seed Weight ◽  
French Bean ◽  
Leaf Length ◽  
Direct Selection ◽  
Genetic Advance ◽  
Cluster Number ◽  
Pod Yield ◽  
100 Seed Weight

Seventy four French bean germplasms were evaluated for twenty two quantitative traits to study the genetic variability, heritability and genetic advance during Jan-Feb in G.B. Pant University of Agriculture and Technology, Pantnagar. Significant differences were observed among all genotypes. Higher genotypic and phenotypic coefficient of variability were observed for plant height, seed yield per plant, pod yield per plant, pod yield per hectare, number of pods per cluster, number of pods per plant and 100 seed weight (42.45% and 43.30%, 39.72% and 42.34%, 27.59% and 32.12%, 27.59% and 32.12%, 25.01% and 28.14%, 24.56% and 26.76% and 22.65% and 22.96% respectively). High heritability coupled with high genetic advance over mean were observed for plant height, seed yield per plant, pod yield per plant, pod yield per hectare, number of pods per plant, 100 seed weight, number of pods per cluster, leaf length, single pod weight, pod diameter, pod length, number of pod clusters per plant, leaf width, seed length, number of seeds per pod and seed width (96.34% and 85.73%, 88.03% and 76.77%, 73.80% and 48.83%, 73.80% and 48.83%, 84.20% and 46.42%, 97.34% and 46.04%, 45.78% and 78.96%, 38.88% and 89.58%, 38.21% and 92.70%, 92.69% and 35.45%, 90.13% and 34.48%, 32.47% and 79.39%, 28.03% and 79.60%, 26.92% and 99.04%, 56.27% and 24.85%, and 97.82% and 24.01% respectively) indicate predominance additive gene action. Thus, there is ample scope for improving these characters through direct selection.

GROWTH RETARDANTS FOR CONTROL OF LODGING IN FLAX

1976 ◽  
Vol 56 (4) ◽  
pp. 799-803 ◽  
Author(s):  
G. H. GUBBELS
Keyword(s):  
Succinic Acid ◽  
Plant Height ◽  
Seed Yield ◽  
Linum Usitatissimum ◽  
Trimethylammonium Chloride ◽  
Growth Retardants ◽  
Linum Usitatissimum L ◽  
Reduced Height ◽  
Early Late ◽  
Number Of Seeds

Redwood 65 and Linott flax (Linum usitatissimum L.) were grown in the field with and without added nitrogen to evaluate the use of growth retardants in reducing lodging. BAS 0660W (N-dimethylmorpholiniumchloride) at 0.21 and 0.63 kg/ha, chlormequat [(2- chloroethyl) trimethylammonium chloride] at 4.2 and 8.4 kg/ha, and ancymidol (α-cyclopropyl-α-(4-methoxyphenyl)-5-pyrimidinemethanol) at 1.05 and 3.15 kg/ha reduced plant height but failed to reduce lodging or increase seed yield when applied at 1,044 liters/ha. Two years of tests with SADH (succinic acid-2, 2-dimethylhydrazide) at 4.2 and 8.4 kg/ha also resulted in no benefits. A third year of testing with SADH, applied early, late and early + late, resulted in reduced duration of flowering, delayed maturity, reduced height and marginally increased lodging, but no effect on seed yield. Number of capsules per plant was increased, but this was offset by a decrease in number of seeds per capsule.

Structural equation modeling of the Canadian flax (Linum usitatissimum L.) core collection for multiple phenotypic traits

2014 ◽  
Vol 94 (8) ◽  
pp. 1325-1332 ◽  
Author(s):  
Tao Zhang ◽  
Eric G. Lamb ◽  
Braulio Soto-Cerda ◽  
Scott Duguid ◽  
Sylvie Cloutier ◽  
...  
Keyword(s):  
Structural Equation Modeling ◽  
Seed Yield ◽  
Linum Usitatissimum ◽  
Seed Weight ◽  
Structural Equation ◽  
Core Collection ◽  
Structural Equation Models ◽  
Equation Modeling ◽  
Phenotypic Traits ◽  
Linum Usitatissimum L

Zhang, T., Lamb, E. G., Soto-Cerda, B., Duguid, S., Cloutier, S., Rowland, G., Diederichsen, A. and Booker, H. M. 2014. Structural equation modeling of the Canadian flax (Linum usitatissimum L.) core collection for multiple phenotypic traits. Can. J. Plant Sci. 94: 1325–1332. Flax seed yield is a complex trait that results from the inter-relationship between many crop characteristics. Structural equation modeling (SEM) is a statistical method used to determine the relationship between measured variables such as crop characteristics. Crop phenology, canopy traits, yield, and its components were included in structural equation models to determine how these crop characteristics relate to seed yield in a phenotypically diverse collection of flax germplasm. Early season vigor (scored as greater plant stand) was positively associated with canopy light interception and higher seed yield. Plant height also had a significant positive effect on seed yield. Moreover, yield components such as 1000-seed weight, number of bolls per unit area, and boll weight were strongly and positively correlated with seed yield. Focusing on yield-related traits, canopy architecture and expansion, and seed weight may be advantageous over yield per se in breeding for yield improvement.

Genetic variability, mean performance and analysis of variance in Linseed (Linum usitatissimum L.)

2019 ◽  
Vol 4 (01) ◽  
pp. 89-95
Author(s):  
Ravindra Kumar Kasana ◽  
P. K. Singh ◽  
Amit Tomar ◽  
Mahak Singh
Keyword(s):  
Genetic Variability ◽  
Plant Height ◽  
Analysis Of Variance ◽  
Seed Yield ◽  
Linum Usitatissimum ◽  
Harvest Index ◽  
Linum Usitatissimum L ◽  
Days To Maturity ◽  
Biological Yield ◽  
Number Of Seeds

The most promising lines showing highest seed yield with high mean performance for other yield contributing characters were identified as EC-22672, NDLS-164, NDLS-169 and NDLS-205-03-02. The genotypes exhibiting highest mean performance for different characters such as EC-22672 for seed yield per plant, SLS-50, NDL-204, Meera and NDLS-204 for early days to 50% flowering, NDLS-181 for early days to maturity, EC- 41494 for plant height, NDLS-77 for primary branches per plant, NDLS-169 for secondary branches per plant, EC-41404 for number of capsules per plant, EC-41494 for number of seeds per capsule, Shekhar for biological yield, EC-23269 for harvest index and SLS-48 for test weight.

STUDY OF EFFECT OF EMS, MMS AND GR ON YIELD CONTRIBUTING TRAITS IN URDBEAN, VIGNA MUNGO

2017 ◽  
Vol 23 (1) ◽  
Author(s):  
A. B. SAGADE
Keyword(s):  
Plant Height ◽  
Seed Yield ◽  
Seed Weight ◽  
Inhibitory Effect ◽  
Individual Plant ◽  
Mean Values ◽  
Methane Sulphonate ◽  
Pod Length ◽  
100 Seed Weight ◽  
Number Of Seeds

The study of the effect of three well known mutagens, ethyl methane sulphonate (EMS), methyl methane sulphonate (MMS) and gamma rays (GR) on the yield contributing traits of the urdbean variety TPU-4 were carried out in the M3 generation. Effect of selected mutagenic treatments/doses of EMS (0.02, 0.03 and 0.04 M), MMS (0.0025, 0.05 and 0.01 M) and (GR) (30, 40 and 50 KR) on different yield contributing traits like plant height, plant spread, number of pods per plant, pod length, number of seeds per pod, seed yield per plant and 100 seed weight were analyzed in the M3 populations of the variety TPU-4. Seeds of M2 plants and control were harvested separately and sown to raise M3 population.. Genetic variabilty in the mutagen administered M3 progeny of the urdbean variety TPU-4 was analyzed by employing statistical methods. Data on mean values and shift in the mean of seven quantitative traits was evaluated on individual plant basis. The experimental findings revealed that concentrations / dose of the all these mutagens showed inhibitory effect on plant height, number of pods per plant, pod length and number of seeds per pod. Lower concentrations of mutagens exerted a promotory effect on plant spread, 100 seed weight and seed yield per plant while higher concentrations of these mutagens inhibited them to different extent.

Combining ability and heterosis studies across environments in linseed (Linum usitatissimum L.)

2011 ◽  
Vol 59 (1) ◽  
pp. 87-102 ◽  
Author(s):  
S. Sood ◽  
N. Kalia ◽  
S. Bhateria
Keyword(s):  
Seed Yield ◽  
Linum Usitatissimum ◽  
Combining Ability ◽  
Yield Components ◽  
Block Design ◽  
Linum Usitatissimum L ◽  
Randomized Block Design ◽  
Component Traits ◽  
Parental Lines ◽  
Fibre Yield

Combining ability and heterosis were calculated for fourteen lines of linseed in a line × tester mating design using twelve lines and two diverse testers in two different environments. The hybrids and parental lines were raised in a completely randomized block design with three replications to investigate seed and fibre yield and their component traits. Genetic variation was significant for most of the traits over environments. Combining ability studies revealed that the lines KL-221 and LCK-9826 were good general combiners for seed yield and most of its components, whereas LMH-62 and LC-2323 were good general combiners for yield components only. Moreover, KL-221 was also a good general combiner for fibre yield. Similarly, B-509 and Ariane were good general combiners for fibre yield and most of its components. Among the specific cross combinations, B-509 × Flak-1 was outstanding for seed yield per plant and B-509 × KL-187 and LC-2323 × LCK-9826 for fibre yield per plant, with high SCA effects. In general, the hybrids excelled their respective parents and the standard checks for most of the characters studied. Based on the comparison of mean performance, SCA effects and the extent of heterosis, the hybrids LC-2323 × LCK-9826 and B-509 × KL-221 appeared to be the most promising for both seed and fibre yield. Other promising combinations were LC-2323 × KL-210 and B-509 × Ariane for seed and fibre yield, respectively. The superiority of LC-2323, LCK-9826, KL-221, B-509 and Ariane as good general combiners was further confirmed by the involvement of these parents in the desirable cross combinations.

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