Genetic control of agronomic traits in an oat population of recombinant lines

Nava, Itamar Cristiano; Duarte, Ismael Tiago de Lima; Pacheco, Marcelo Teixeira; Federizzi, Luiz Carlos

doi:10.1590/s1984-70332010000400004

Cited by 8 publications

(9 citation statements)

References 11 publications

(9 reference statements)

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“…As a result, we can say that the main reason for the differences in H values for GY was due to both genotypic and environmental effects. For instance, Yan et al (2016) estimated H values for GY in oat as 0.00-0.44 (zero H to low H), in their study in Canada, so did Nava et al (2010) as 0.48 (low H) in Brazil. On the contrary, Svobodova et al (2019) estimated the H value for GY as 0.81.…”

Section: Heritabilitymentioning

confidence: 92%

Yüksek Kaliteli Kışlık Yulaf Çeşitlerinin Geliştirilmesi

Kaya

Akçura

2021

Türk Tarım Ve Doğa Bilimleri Dergisi

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Milli yulaf ıslah programının amacı, yüksek verimli, hastalıklara, kurağa, soğuğa, yüksek sıcağa dayanıklı ve farklı kullanıma (gıda, tane yem ve kaba yem) uygun yeni çeşitler geliştirmektedir. Bu amaca ulaşmak için 2008 ile 2012 yılları arasında verim, bölge verim ve tescil ön denemesi kademelerinde toplam 284 yulaf genotipi (232 hat ve 52 standart çeşit) yağışa bağımlı şartlarda test edilmiştir. Ardışık yulaf ıslah döngülerinde, yüksek verimli ve kaliteli genotipler seçilmiştir. Kalite özellikleri arasında, protein oranı (PO), yağ oranı (YO) ve hektolitre ağırlığı (HA) seleksiyon kriteri olarak tercih edilmiştir. Kalıtım derecesi (H) ve korelasyon katsayıları test edilen genotiplerin tane verimi (TV) ve kalite özellikleri için hesaplanmıştır. TV için H değeri düşük (0.38) fakat kalite özellikleri için orta (sırasıyla 0.66, 0.68 ve 0.57) düzeyde tahmin edilmiştir. Özelliklerarası korelasyon katsayıları incelendiğinde TV ile YO arasında, TV ile HA arasında ve YO ile HA arasında pozitif, TV ile PO arasında, PO ile YO arasında, PO ile HA arasında ise negatif önemli korelasyon katsayıları belirlenmiştir. İncelenen özellikler arasındaki olumsuz korelasyonlar ve düşük-orta H değerleri milli yulaf ıslah programının en önemli zorlukları olarak karşımıza çıkmaktadır. Bu zorlukları aşmak için ivedilikle yulaf melez bahçesinde yer alan ebeveynlerin (gen havuzu) karakterize edilmesi ve yeni yulaf materyalinin (yurt içinden ve dışından) melez bahçesine katılarak gen havuzunun genişletilmesi önerilebilir. Bu şekilde yüksek verimli ve kaliteli yulaf çeşidi geliştirme olasılığı artırılabilir.

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Section: Heritabilitymentioning

confidence: 92%

Yüksek Kaliteli Kışlık Yulaf Çeşitlerinin Geliştirilmesi

Kaya

Akçura

2021

Türk Tarım Ve Doğa Bilimleri Dergisi

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“…The independent inheritance of the two traits has been reported for the first time in the present study. Role of one gene in Brassica rapa (Rahman 2014) and three genes in oats (Nava et al 2010) have been implicated for the hairy trait. A number of QTLs/ genes controlling leaf hairiness have also been detected through molecular analysis in Arabidopsis (Payne et al 2000), wheat (Dobrovolskaya et al 2007) and soybean (Du et al 2009).…”

Section: Segregation Pattern Of Flower Colour and Leaf Hairinessmentioning

confidence: 99%

Independent segregation of qualitative traits and estimation of genetic parameters and gene action for some quantitative traits in guar (Cyamopsis tetragonoloba L. Taub.)

Mahla

Sharma

Kumar

et al. 2020

IJGPB

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Current study was undertaken to elucidate the inheritance qualitative traits namely, flower colour and leaf hairiness in two F2 populations comprising of 194 and 99 individuals with reference to yield and agronomic traits along with genetic parameters. The violet colour of flowers and leaf hairiness were dominant over white flower and smooth leaves, respectively. The 2-test revealed independent single gene inheritance for both the traits with joint segregation ratio of 9:3:3:1 in F2. Except for no. of pods per cluster and pods per plant, both parents (Smooth 25 and HG2-20) exhibited significant (p less then 0.05) differences for traits under investigation. A higher estimate of phenotypic coefficient of variance (PCV) than genonotypic coefficient of variance (GCV) was recorded for all the characters except test weight and clusters on branches. The heritability ranged from 24.36% (seeds per pod) to 92.32% (clusters on branches). Gene action as per skewness indicated that both duplicate and complementary interactions were playing role in the development of various traits, whereas, inheritance analysis as per kurtosis suggested that traits were oligogenic. Eventually, it can be concluded that high GCV, appearance of transgressive segregants and involvement of fewer major genes in defining the quantitative traits including yield, provided an opportunity for their genetic improvement.

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“…Heritability of heading date in hexaploid oat has already been estimated in previous studies. Nava et al (2010) estimated a heritability coefficient of 0.89 in a population of fixed/pure oat lines. The estimate was based on the average of homozygous lines evaluated at one location with three replicates.…”

Section: Heritability Of the Heading Datementioning

confidence: 99%

Phenotypic variation and heritability of heading date in hexaploid oat

Mazurkievicz

Ubert

Krause

et al. 2019

Crop Breed. Appl. Biotechnol.

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The onset of flowering is decisive to the reproductive success of plants. The objectives of this study were to characterize the phenotypic variation in heading date and estimate its heritability in segregating populations of oat (Avena sativa L.). F 2 and F 3 generations of two large populations, derived from crosses 'URS Taura × Leggett' and 'FL0206B-S-B-S1 × UFRGS 078030-1', were evaluated. A wide phenotypic variation in the number of days to heading was observed in both populations. Heritability coefficients of 0.68 and 0.46 were estimated for the 'URS Taura × Leggett' and 'FL0206B-S-B-S1 × UFRGS 078030-1' populations. Our results demonstrate that genetic differences derived from parents in response to photoperiod and temperature explain most of the phenotypic variation in heading date of oat populations. Understanding genetic and environmental effects on flowering expression is essential to increase the response to selection for well-adapted and high-yielding oat cultivars.

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Genetic control of agronomic traits in an oat population of recombinant lines

Abstract: -Understanding the genetic control of phenotypic traits is essential to increase

Cited by 8 publications

References 11 publications

Yüksek Kaliteli Kışlık Yulaf Çeşitlerinin Geliştirilmesi

Yüksek Kaliteli Kışlık Yulaf Çeşitlerinin Geliştirilmesi

Independent segregation of qualitative traits and estimation of genetic parameters and gene action for some quantitative traits in guar (Cyamopsis tetragonoloba L. Taub.)

Phenotypic variation and heritability of heading date in hexaploid oat

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