Correlation of Some Morphological Traits in Upland Cotton (G. hirsutum L.)

2018 ◽  
Vol 8 (12) ◽  
Author(s):  
U. R. Azmi ◽  
M. Irfan ◽  
M. Naeem ◽  
H. A. Qureshi
Keyword(s):  
Upland Cotton ◽  
Morphological Traits

Quantitative inheritance of leaf morphological traits in upland cotton

2008 ◽  
Vol 146 (5) ◽  
pp. 561-569 ◽  
Author(s):  
J. J. HAO ◽  
S. X. YU ◽  
Z. D. DONG ◽  
S. L. FAN ◽  
Q. X. MA ◽  
...  
Keyword(s):  
Upland Cotton ◽  
Morphological Traits ◽  
Leaf Morphology ◽  
Genetic Manipulation ◽  
Morphological Trait ◽  
Dominance Model ◽  
Number Of Genes ◽  
Minimum Number ◽  
Leaf Morphological Trait ◽  
Leaf Morphological Traits

SUMMARYGenetic manipulation of leaf architecture may be a useful breeding objective in cotton (Gossypiumspp.). The present study reports quantitative genetic analysis of leaf traits from two intraspecific crosses of inbred lines in upland cotton (Gossypium hirsutumL.) viz. Kang3×Chaoji463 and Han109×Ji98. Six leaf morphological traits (leaf area (LA), leaf perimeter (LP), main lobe length (LL) and width (LW), petiole length (PL), and main LL/LW ratio) were recorded from multiple generations (P1, F1, P2, BC1, BC2, and F2) in the two crosses. Generation mean analyses were conducted to explain the inheritance of each leaf morphological trait. The six-parameter model showed a better fit to an additive-dominance model for LA, main LW, PL, and main LL/LW ratio in the two crosses, suggesting the relative importance of epistatic effects controlling leaf morphology. A simple additive-dominance model accounted for the genetic variation of the main LL in the Kang3×Chaoji463 cross. Different models were selected as appropriate to explain LP in the two crosses. The differences between broad- and narrow-sense heritability values for the same trait were not constant in the two crosses. The estimated minimum number of genes controlling each leaf morphological trait ranged from 0 to 2 for both the crosses. Moreover, the sums of the minimum number of genes controlling leaf morphology were 6 and 2 in the Kang3×Chaoji463 and Han109×Ji98 populations, respectively. Most data suggested that there existed a substantial opportunity to breed cottons that transgress the present range of leaf phenotypes found.

scholarly journals High-density linkage map construction and QTL analyses for fiber quality, yield and morphological traits using CottonSNP63K array in upland cotton (Gossypium hirsutum L.)

BMC Genomics ◽  
2019 ◽  
Vol 20 (1) ◽  
Author(s):  
Kuang Zhang ◽  
Vasu Kuraparthy ◽  
Hui Fang ◽  
Linglong Zhu ◽  
Shilpa Sood ◽  
...  
Keyword(s):  
Upland Cotton ◽  
Morphological Traits ◽  
Fiber Quality ◽  
High Density ◽  
Genetic Maps ◽  
Yield Traits ◽  
Quality Traits ◽  
Fiber Quality Traits ◽  
Favorable Alleles ◽  
Cotton Breeding

Abstract Background Improving fiber quality and yield are the primary research objectives in cotton breeding for enhancing the economic viability and sustainability of Upland cotton production. Identifying the quantitative trait loci (QTL) for fiber quality and yield traits using the high-density SNP-based genetic maps allows for bridging genomics with cotton breeding through marker assisted and genomic selection. In this study, a recombinant inbred line (RIL) population, derived from cross between two parental accessions, which represent broad allele diversity in Upland cotton, was used to construct high-density SNP-based linkage maps and to map the QTLs controlling important cotton traits. Results Molecular genetic mapping using RIL population produced a genetic map of 3129 SNPs, mapped at a density of 1.41 cM. Genetic maps of the individual chromosomes showed good collinearity with the sequence based physical map. A total of 106 QTLs were identified which included 59 QTLs for six fiber quality traits, 38 QTLs for four yield traits and 9 QTLs for two morphological traits. Sub-genome wide, 57 QTLs were mapped in A sub-genome and 49 were mapped in D sub-genome. More than 75% of the QTLs with favorable alleles were contributed by the parental accession NC05AZ06. Forty-six mapped QTLs each explained more than 10% of the phenotypic variation. Further, we identified 21 QTL clusters where 12 QTL clusters were mapped in the A sub-genome and 9 were mapped in the D sub-genome. Candidate gene analyses of the 11 stable QTL harboring genomic regions identified 19 putative genes which had functional role in cotton fiber development. Conclusion We constructed a high-density genetic map of SNPs in Upland cotton. Collinearity between genetic and physical maps indicated no major structural changes in the genetic mapping populations. Most traits showed high broad-sense heritability. One hundred and six QTLs were identified for the fiber quality, yield and morphological traits. Majority of the QTLs with favorable alleles were contributed by improved parental accession. More than 70% of the mapped QTLs shared the similar map position with previously reported QTLs which suggest the genetic relatedness of Upland cotton germplasm. Identification of QTL clusters could explain the correlation among some fiber quality traits in cotton. Stable and major QTLs and QTL clusters of traits identified in the current study could be the targets for map-based cloning and marker assisted selection (MAS) in cotton breeding. The genomic region on D12 containing the major stable QTLs for micronaire, fiber strength and lint percentage could be potential targets for MAS and gene cloning of fiber quality traits in cotton.

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.

The Medieval Population of Mountainous Ingushetia According to Odontological Data

2019 ◽  
Vol 48 (4) ◽  
pp. 178-196
Author(s):  
Natalya A. Lejbova ◽  
Umalat B. Gadiev
Keyword(s):  
Morphological Traits ◽  
Dental Anthropology ◽  
Deep Roots ◽  
The Caucasus ◽  
New Material ◽  
The Republic ◽  
The Village ◽  
Medieval Population

Although population of the Caucasus has been studied in a rather detailed way, there are peoples whose anthropological portrait is still incomplete. Among them are the Ingush, one of the oldest autochthonous peoples of the Caucasus. This work presents new material on the dental anthropology of medieval Ingush, collected in 2017 during expeditions to the Jairakh and Sunzhen districts of the Republic of Ingushetia. In the Jairakh district, the investigations were carried out in the crypt complexes of the 15th–18th centuries – Targim, Agikal, Tsori, Salgi, and in Sunzhen region - in crypts near the village of Muzgan. The craniological series of medieval Ingush studied according to the dental anthropology program can be described as belonging to the western range of odontological complexes. Unlike most modern Caucasian groups, it does not belong to gracile forms, but rather to a maturized odontological variant, which has deep roots in the Caucasus. The results once again demonstrate a certain conservatism and stability of the dental system, which preserves morphological traits of ancestral groups longer than other anthropological systems.

Sign in / Sign up

Export Citation Format

Share Document