GENETIC VARIABILITY AND INTERRELATIONSHIP AMONG MORPHOLOGICAL TRAITS IN AFRICAN PEAR FRUIT (DACRYODES EDULIS (G.DON) H.J. LAM) ACCESSIONS

2020 ◽  
Vol 19 (1) ◽  
pp. 46-59
Author(s):  
V. I. ALAJE ◽  
C. O. ALAKE
Keyword(s):  
Genetic Variability ◽  
Total Variation ◽  
Morphological Traits ◽  
Biomass Accumulation ◽  
Leaf Length ◽  
Root Weight ◽  
Pear Fruit ◽  
Leaf Weight ◽  
Dacryodes Edulis ◽  
African Pear

African pear fruit (Dacryodes edulis) is a highly sought for multipurpose agroforestry tree species that has the potential for both local and international trades, Nigeria is among the leading producer of the fruit, but its pattern and extent of its genetic variability is currently unknown. Hence, a study was carried out to determine the pattern and extent of genetic variability and interrelationships among 13 morphological traits of African pear fruit accessions. The experiment was laid in a Completely Randomized Design in 5 replications. Data collected on number of leaf production, leaf length,  leaf breadth,  leaf length/breadth ratio,  internode distances, plant height, collar diameter, fresh leaf weight, fresh stem weight, fresh root weight, dry leaf weight, dry stem weight, dry root weight and  biomass accumulation were subjected to Analysis of Variance. Treatment means were separated using Duncan’s Multiple Range Test at 5% probability level. Results showed significant (p<0.05) differences among the D. edulis genotypes for most of the traits evaluated  indicated variation in the performance of the genotypes and  pattern of clustering indicated that there was no association between eco-geographical distribution of genotypes and genetic diversity. PCA revealed that fourteen axes accounted for 100% of the variations observed while the first five axes contributed 73.23% of the total variation observed. The first axis accounted for 25.61% of the total variation while the second and third accounted for 15.43 and 15.01%, respectively. The fourth axis contributed 9.82% of the total variation while the fifth axis contributed 7.36% of the total variation. Significant phenotypic and genotypic correlations were observed between most of the plant characters evaluated and biomass accumulation  which is an indication that the phenotypic association will be a good index for the genotypic association.  

scholarly journals EVALUATION OF GENETIC VARIABILITY FOR SALT TOLERANCE IN WHEAT

2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
L Iqra ◽  
MS Rashid ◽  
Q Ali ◽  
I Latif ◽  
A Malik
Keyword(s):  
Salt Stress ◽  
Root Length ◽  
Morphological Traits ◽  
Root Weight ◽  
Genetic Advance ◽  
Genotype 4 ◽  
Fresh Leaf ◽  
Wheat Genotypes ◽  
Leaf Weight ◽  
Genotype 2

Wheat is an important cereal crop which has been consumed as food crop throughout the globe. Present study discusses change in different morphological traits of six most common wheat varieties in Pakistan under the effect of salt stress. We have used two salt solutions; 10 dS/m NaCl and 15 dS/m NaCl concentrations were used in our research. Data collected during research indicates that all morphological traits decrease under salt treatments except that of two trait viz., root length and carotenoids level. It was noted that under the effect of both salt concentrations carotenoids content increased in significant amount in leaves and roots along with root length which was also increased. The outcomes from analysis of variance demonstrated that there was higher leaf caroteniods for genotype 5 (Ujala-16) that was 998.32 mg/g of fresh leaf weight trailed by genotype 1 (Inqalab-91) 995.99 mg/g of fresh leaf weight) while lower carotenoids were found for genotype 2(Shafaq-06) that was 825.65 mg/g of fresh leaf weight. Highest root weight was found in Shafaq-06 under treatment of 15dS/m NaCl. While pooled all Pairwise comparison test revealed highest root length in genotype 4 (Galaxy-13). While linear regression suggests that carotenoids content contribute least in plant height. Genetic heritability was found highest for photosynthetic pigments i.e. 99.99% for chlorophyll b except that of carotenoids. Genetic advance was recorded higher for fresh stem weight (309.870%). Higher heritability and genetic advance revealed that from our study that the selection of salt stress wheat genotypes on the basis of root length may be help to develop salt stress tolerance wheat genotypes with higher grain yield. 

PROFILING OF GUAVA GENOTYPES GROWN IN VIDARBHA CONDITIONS ON THE BASIS OF MORPHOLOGICAL TRAITS

2017 ◽  
Vol 23 (1) ◽  
Author(s):  
R.A. PATIL ◽  
S.G. BHARAD ◽  
S.N. SAWANT
Keyword(s):  
Genetic Diversity ◽  
Genetic Variability ◽  
Morphological Traits ◽  
Considerable Extent ◽  
Fruit Traits ◽  
Breeding Programmes ◽  
Tree Leaf ◽  
Qualitative Characteristics ◽  
Intrapopulation Diversity

Assessment of genetic diversity in the available germplasm is the prerequisite for development of improved genotypes through planned breeding programmes. In the view of this Forty-eight genotypes of seedling origin guava along with 1 check (L-49/Sardar) collected and conserved at germplasm block, Main Garden, Department of Horticulture, Dr. P. D. A. University, Akola were evaluated for genetic variability and diversity based on the qualitative characteristics. The genotypes were evaluated for sixteen morphological traitsviz. tree, leaf, floral and fruit traits. Results Show considerable extent of variability amongst the 49 genotypes in each traits. A sizeable amount of intrapopulation diversity recorded can be used to identify diverse parents which can be utilized in hybridization programmes.

Growth responses of Leymus chinensis (Trin.) Tzvelev to sheep saliva after defoliation

2010 ◽  
Vol 32 (4) ◽  
pp. 419 ◽  
Author(s):  
Xing Teng ◽  
Lei Ba ◽  
Deli Wang ◽  
Ling Wang ◽  
Jushan Liu
Keyword(s):  
Plant Growth ◽  
Aboveground Biomass ◽  
Field Experiments ◽  
Perennial Grass ◽  
Leaf Length ◽  
Leymus Chinensis ◽  
Growth Responses ◽  
Time Duration ◽  
Positive Effects ◽  
Leaf Weight

Many studies indicated that saliva from herbivores might be involved in plant growth responses when plants have been grazed. However, there is currently no general agreement on whether saliva can affect plant growth. Our aims were to determine the growth response of plants to sheep saliva after defoliation under diverse environmental conditions (different sward structures), and whether the effect of saliva is influenced by time (duration) after its application. We conducted field experiments with clipping treatments and the application of sheep saliva to the damaged parts of tillers to simulate sheep grazing on the perennial grass Leymus chinensis (Trin.) Tzvelev during the early growing seasons. Results demonstrated that clipping with saliva application significantly increased tiller numbers 8 weeks after treatments in comparison with clipping alone. A key finding is that the effect of sheep saliva on plant growth was short-lived. Clipping with saliva application increased leaf weight in the second week, while clipping alone had no effect. Moreover, clipping with saliva application promoted the elongation of new leaves (not the old ones) in the first week whereas clipping alone was ineffective. Results also showed that there were no differences between clipping with saliva application and clipping alone for relative height growth rate and aboveground biomass. Therefore, we concluded that saliva application to clipping treatment would produce an additional effect compared to clipping alone for the plant and the positive effects are time dependent. The additional effects primarily embodied in the individual level of plant, such as the changes of leaf weight and leaf length. Beyond the level, the effects of saliva only produced many more tiller numbers rather than the accumulation of aboveground biomass.

Moderate Boron Concentration Beneficial for Flue-cured Tobacco Seedlings Growth and Development

2021 ◽  
Author(s):  
Mengxia Li ◽  
Xiaopeng Deng ◽  
Ke Ren ◽  
Rui Liu ◽  
Tao Wang ◽  
...  
Keyword(s):  
Antioxidant Enzymes ◽  
Dry Matter ◽  
Agronomic Traits ◽  
Photosynthetic Performance ◽  
Leaf Length ◽  
Internal Quality ◽  
Root Weight ◽  
Nicotine Content ◽  
Hydroponic Experiment ◽  
Tobacco Seedlings

Abstract Boron (B) is a micronutrient tobacco needs in minute amounts, and Boron insufficient supply can causes significant tobacco yield loss, however, the appropriate concentration for flue-cured tobacco seedlings to growth remains unknown. In this sense, a hydroponic experiment was conduct to measure the agronomic traits, dry matter mass, chlorophyll content, photosynthetic performance, antioxidant enzymes, boron ion and nicotine content of flue-cured tobacco seedlings K326 under different boron concentrations of 0.000mmol/L (B1, CK), 0.125mmol/L (B2), 0.250mmol/L (B3), 0.750mmol/L (B4), 5.000mmol/L (B5), 10.000mmol/L (B6), 20.000mmol/L (B7), 40.000mmol/L (B8) after 30 days. B significantly influenced flue-tobacco seedlings growth on agronomic traits, photosynthetic performance, the activities of antioxidant enzymes, boron ion and nicotine content aspects. B linearly enhanced the accumulation of boron ion by 24.00%~96.44%, and decreased nicotine content by 21.60%~82.03% in tobacco seedlings. Solution B concentration at 0.750 and 5.000mmol/L markedly improved tobacco seedlings maximum leaf length by 4.83%~82.03% and leaf width by 0.77%~24.36%, root weight by 13.64%~56.82%, stem weight by 12.26%~52.36%, leaf weight by 9.68%~36.56%, dry matter mass by 10.65%~38.92%, the Pn parameter by 1.22%~80.28%, the Cond paramete by 33.40%~75.86%, while decreased the activities of SOD by 10.44%~91.67%, POD by 21.32%~65.62% and CAT by 50.05%~96.44%, and MDA by 16.23%~75.16%. The B concentration concluded in this study enhanced the agronomy traits, photosynthetic and biochemical characteristics of flue-cured tobacco seedlings, which lays a scientific theoretical foundation for rational application of B in tobacco production and improve the internal quality of flue-cured tobacco.

scholarly journals Adaçayı ve Dağ Çayında Tuz Stresi Üzerine Selenyum Uygulamalarının Etkileri

2019 ◽  
Vol 7 (sp2) ◽  
pp. 29
Author(s):  
Mahmut Çamlıca ◽  
Gülsüm Yaldız ◽  
Ferit Özen ◽  
Abdurrahman Başol ◽  
Halit Aşkın
Keyword(s):  
Plant Height ◽  
Root Length ◽  
Root Weight ◽  
Fresh Leaf ◽  
Leaf Weight ◽  
Number Of Leaves ◽  
Shoot Weight ◽  
Different Doses ◽  
Number Of Branches ◽  
Fresh Root

Sage and mountain sage belong to Lamiaceae family which have commercial importance from medicinal and aromatic plants in Turkey. The aim of this study was to evaluate the effects of different doses of selenium in salinity conditions on the morphological characteristics of sage (Salvia officinalis L.) and mountain tea (Sideritis sp.). Four different doses of selenium (5, 10, 20, 40 mg/l) were applied in without salinity (0) and salinity (250 mM NaCl/l) medium. The experiment was carried out in the split plot design with three replications in the climate chamber room of the department of field crops. When the examined properties were evaluated; plant height changed between 15.56-23.85 cm, number of branches 10.50-12.78 number/plant, number of leaves 52.78-92.00 number/plant, fresh leaf weight 2.48-7.51 g/plant, dry leaf weight 0.48-3.32 g/plant, fresh root weight 1.52-7.16 g/plant, dry root weight 0.19-1.24 g/plant, root length 26.18-36.07 cm, fresh shoot weight of 1.13-7.15 g/plant and dry shoot weight 0.13-0.38 g/plant. In mountain tea, the properties were determined for plant height as 3.26-5.93 cm, for number of branches as 2.50-6.33 number/plant, for number of leaves as 28.22-91.14 number/plant, for fresh and dry leaf weights as 2.42-11,03 and 0.45-1.91 g/plant, for fresh and dry root weights as 0.71-3.97 and 0.18-0.74 g/plant, for root length as 14.78-33.26 cm, for fresh and dry shoot weights as 0.29-2.28 and 0.12-0.41 g/plant were determined. As a result of this study, 5 mg/l selenium application in salinity conditions in both plants has reached high values in terms of fresh leaf weights. In addition to this, it was found that selenium applications in salinity conditions had positive effects on dry leaf weight in sage and fresh root and fresh shoot weights in mountain tea. As a result of correlation analysis, positive correlations were found between dry leaf weight and other characteristics especially in mountain tea in terms of traits examined in both plants.

A Study on the Genetic Variability and Genetic Control of the Important Morphometric Characters of Curcuma aeruginosa Roxb.

2016 ◽  
Vol 23 (2) ◽  
pp. 61-65
Author(s):  
V. Soorya ◽  
V. Radhakrishnan ◽  
K. Mohanan
Keyword(s):  
Genetic Variability ◽  
Genetic Control ◽  
Continuous Distribution ◽  
Low Frequency ◽  
Wide Distribution ◽  
Leaf Length ◽  
Contributing Factors ◽  
Morphometric Characters ◽  
Polygenic Control ◽  
Balanced Distribution

Curcuma aeruginosa Roxb., the pink and blue ginger is an underutilized rhizomatous herb used in the Indian as well as Thai and Malaysian systems of traditional medicine.Its antioxidant and nutraceutical properties have also been explored recently. However, no effort has been made to study the genetic variability and genetic control of the agronomic morphometric characters of this species. Hence the present study was carried out to analyse the genetic variability and genetic control of such characters in the species.All the fifteen morphometric characters showed continuous distribution indicating their polygenic control. Among the growth characters, plant height, leaf length, leaf breadth and leaf area showed accumulation of higher number of dominant alleles in their gene pool and number of tillers and number of leaves per tiller showed higher accumulation of recessive factors. Among the yield characters, length of primary fingers and length of secondary fingers showed a balanced distribution of genotypes, number of primary fingers, number of secondary fingers, diameter of primary tillers, length of mother rhizome and yield per plant showed skewness towards the assembly of higher number of recessive factors and diameter of primary fingers and diameter of secondary fingers showed skewness towards the assembly of dominant contributing factors. However, all the characters under study showed comparatively wide distribution of factor combinations, indicating the broad genetic base of the population under study. However, most of the agronomically important characters showed very low frequency of genotypes with higher number of dominant factors indicating the necessity of selecting superior genotypes to develop improved varieties.

scholarly journals NaCl Improves Suaeda salsa Aniline Tolerance in Wastewater

2020 ◽  
Vol 12 (18) ◽  
pp. 7457
Author(s):  
Jie Xu ◽  
Yi Liu ◽  
Chao Zhu ◽  
Honglei Jia ◽  
Changyan Tian ◽  
...  
Keyword(s):  
Chlorophyll Fluorescence ◽  
Plant Growth ◽  
Removal Efficiency ◽  
Seedling Growth ◽  
Negative Correlation ◽  
Morphological Traits ◽  
Biomass Accumulation ◽  
Suaeda Salsa ◽  
Ion Content ◽  
Moderate Salinity

Halophytes have been studied as a model for morphological traits of adaptation to saline environments. However, little information has been given on plant growth, chlorophyll fluorescence responses, and change of ion content in halophytes grown in an aniline–salinity coexistent environment. This study hypothesized that aniline could induce alterations in plant growth, chlorophyll fluorescence, and ion content in Suaeda salsa, but salinity could promote the tolerance of halophytes to aniline. A 6 (aniline) × 3 (NaCl) factorial experiment (for a total of 18 treatments) was conducted to test the above hypothesis. After 30 d of cultivation, roots and shoots were harvested separately to analyze the effects of salinity on the seedling growth under aniline stress. Biomass accumulation was inhibited by aniline treatment, and the inhibition was significantly alleviated by 200 mM NaCl. The change in chlorophyll fluorescence in leaves with aniline stress was moderated by the addition of NaCl. The removal efficiency of aniline was significantly enhanced by moderate salinity. Aniline stress decreased the accumulation of Mg2+, but various concentrations of NaCl increased the accumulation of Mg2+, especially with 200 mM NaCl in both roots and shoots. Both aniline and salinity decreased the content of Ca2+. There was a negative correlation between the K+ and NaCl concentrations and between the Cl− and aniline concentrations. Our results indicated that Suaeda salsa may be suitable for the remediation of salinity and aniline-enriched wastewater.

Sign in / Sign up

Export Citation Format

Share Document