Twin Pair Analysis of Some Palm Indexes

SummaryThe heritability of two main line indexes (DLI and TLI), a palm crease index (API), and an ulnarity index (UI) were investigated by using twin pair methodology for quantitative traits.The analyses of the data allow to conclude that both DLI and API, which have been used to evaluate the obliquity of the main lines and the distal crease of the palm, should not be considered as depending upon an important genetic component. Otherwise, data on TLI and UI, while showing inconsistencies with the theoretical expectations, may be considered as genetic traits.

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Examination of Apple (Malus × domestica) Fruit Quality and Tree and Fruit Morphology using Molecular Markers

HortScience ◽

10.21273/hortsci.30.4.832c ◽

1995 ◽

Vol 30 (4) ◽

pp. 832C-832

Author(s):

Patrick J. Conner ◽

Susan K. Brown ◽

Norman F. Weeden

Keyword(s):

Molecular Markers ◽

Fruit Quality ◽

Quantitative Traits ◽

Rapd Markers ◽

Fruit Size ◽

Stem Length ◽

Fruit Morphology ◽

Genetic Traits ◽

Qualitative And Quantitative ◽

Plant Form

Two half-sib populations (cross 1 = `Wijcik McIntosh' (WM) × NY 75441-67, and cross 2 = WM × NY 75441-58) were used to create maps for the parents and to find RAPD or isozyme markers for qualitative and quantitative traits. WM is a sport of `McIntosh' and is heterozygous for the dominant columnar (Co) gene for reduced branching. WM is of great interest in breeding because of the tremendous effect of the Co gene on many aspects of plant form. NY 75441-67 and NY 75441-58 are advanced selections with commercial fruit quality and resistance to scab (Vf resistance from M. floribunda). Traits examined included both tree (plant height, stem diameter, suckering, branching habit, leaf break, burr knot production) and fruit (size, shape, color, stem length, seed number) characters and fruit quality traits (pH, acid content, Brix). The conservation of RAPD markers in these closely related crosses will be examined and the usefulness of molecular markers to preselect for components of plant form and fruit quality will be discussed. Molecular markers will increase the efficiency of the apple breeding program by aiding the understanding and manipulation of complex genetic traits.

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Доцільність використання теорії препотентності у тваринництві

Вісник Полтавської державної аграрної академії ◽

10.31210/visnyk2013.01.18 ◽

2013 ◽

pp. 76-79

Author(s):

В. М. Гиря

Keyword(s):

Quantitative Traits ◽

Homozygous State ◽

Genetic Inheritance ◽

Genetic Traits ◽

Qualitative And Quantitative ◽

The Past ◽

Livestock Sector ◽

Methodological Approaches ◽

Definition Of

Висвітлюються окремі аспекти теорії препотентності тварин. Дається аналіз різних поглядів науковців минулого й сучасності стосовно її значимості в процесі оцінки продуктивності плідників у здатності передачі потомству своїх найкращих ознак. З урахуванням світових поглядів дана концепція повинна ґрунтуватися на генетичних законах успадкування, домінантного або гомозиготного стану генів якісних і кількісних селекційних ознак. Використання у наукових дослідженнях сучасних методичних підходів щодо встановлення селекційно-генних комплексів продуктивних ознак тварин ставить під сумнів існування теоріїпрепотентності. The separate aspects of theory of animal prepotent are сonsidered. The analysis of the different views of scientists of the past and present times as to its significance in evaluating the productivity of producers in the ability to transfer their best features are given. The concept should be based on the laws of genetic inheritance, the dominant or homozygous state of qualitative and quantitative traits. Use in research of modern methodological approaches concerning the definition of breeding and genetic traits of animals prejudices the existence of the theory of prepotent in livestock sector.

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Some quantitative genetic traits in Vietnamese indigenous Noi chicken from 0 to 28 days old

Biotechnology in Animal Husbandry ◽

10.2298/bah1902141k ◽

2019 ◽

Vol 35 (2) ◽

pp. 141-151

Author(s):

Do Khoa ◽

Nguyen Tuoi ◽

Nguyen Nguyen ◽

Nguyen Thuy ◽

Shin Okamoto ◽

...

Keyword(s):

Quantitative Traits ◽

Positive Relationship ◽

Conversion Ratio ◽

Feed Conversion Ratio ◽

Feed Conversion ◽

Genetic Traits ◽

Time Points ◽

Quantitative Genetic ◽

Significant Difference ◽

Quantitative Genetic Traits

The aim of this study is to characterize some quantitative traits of Noi chicken, one of the Vietnamese famous native breeds for meat quality and fighting, at the stage of 0-28 days old. Therefore, 742 chicks were used to measure, record, analyze and evaluate on these traits. As results, there was significant difference in observation traits among stages of age (P=0.000). Interesting, the wings (+64.88%) and keel lengths (+58.83%) rapidly developed within the first week of life, followed by the most of other dimensions, especially breast diameter (+31.85%), thigh diameter (+71.17%) in the second week of age. An increase in the size of the measurements was due to development of the skeleton at observing time points along the experiment. However, there was strong development of muscle tissue in the second week of life as rate of the breast and thigh diameter was greatest. Noi chicks consumed amount of feed of 16.54 g/bird/day and gained a weight of 6.98 g/bird/day. Thus, their feed conversion ratio was 2.37 at the stage of 0-28 days old. Perhaps a direct positive relationship between observed traits and age were randomly established according biological characteristics of animal. This work provided initial benchmarks of Noi chicks for further studies.

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