Inheritance of Leaflet Size in Peanut (Arachis hypogaea L.)1

1993 ◽  
Vol 20 (2) ◽  
pp. 90-93 ◽  
Author(s):  
N. B. Essomba ◽  
T. A. Coffelt ◽  
W. D. Branch ◽  
S. W. Van Scoyoc

Abstract Leaves are the main site of photosynthesis in plants. Leaf size and shape have been shown to be related to disease resistance. Therefore, understanding the inheritance of traits related to them is important. Conflicting results have been reported on the inheritance of leaflet size in peanut (Arachis hypogaea L.). Some indicate qualitative inheritance and others quantitative determination. This study was undertaken to examine the genetic factors which control leaflet size in peanut. F2 populations from a modified diallel (excluding self-crosses) with three parents, A. monticola and two A. hypogaea genotypes (Argentine and T2442), were used in this experiment. In contrast with previous studies, the measurement technique used took into account the within-plant variability which occurs for this trait. Results suggest that: a) leaflet size may be quasi-quantitatively inherited; i.e., its inheritance may present distinguishable genotypes within continuous variation; b) the inheritance of leaflet size may involve two types of alleles of which one would be responsible for large leaflet size, while the other would be responsible for small leaflet size; and c) the use of progressive measurement scales and the analysis of ungrouped data are advisable on genetic studies of some morphological traits in peanut.

1997 ◽  
Vol 24 (1) ◽  
pp. 60-62 ◽  
Author(s):  
W. D. Branch

Abstract A better understanding of peanut (Arachis hypogaea L.) testa color genetics would be helpful to breeders in developing new cultivars to meet U.S. market acceptability. Wine is one of the least understood of all basic testa colors in peanut. The objective of this genetic study was to gain further knowledge on the inheritance of wine testa color and possible allelic interactions. Crosses were made using two true-breeding wine testa color genotypes (Wine-Frr and PI 264549) as females with the tan testa and recessive red testa male parents Krinkle-Leaf and Makulu Red, respectively. F1, F2, and F3 data suggest no difference between the two wine testa color genotypes. Inheritance of wine testa color was found to be recessive with a one gene difference between wine and the tan testa color of Krinkle-Leaf, and with two gene differences between wine and the recessive red testa color of Makulu Red. Inheritance of wine seems to closely parallel that for recessive red testa color in the cultivated peanut.


1992 ◽  
Vol 18 (2) ◽  
pp. 315-325 ◽  
Author(s):  
Tracy Halward ◽  
Tom Stalker ◽  
Elizabeth LaRue ◽  
Gary Kochert

1982 ◽  
Vol 9 (1) ◽  
pp. 44-46 ◽  
Author(s):  
Allan R. Hovis ◽  
Clyde T. Young ◽  
Peter Y. P. Tai

Abstract Six peanut (Arachis hypogaea L.) varieties were analyzed for amino acid concentration among four consecutive sections across the two cotyledons. Significant differences were found among varieties (average 60% of total variation), among seeds (average 15% of total variation), and for some amino acids between sections (average 2.7% of total variation). With the exception of glutamic acid, proline, and histidine, varietal differences accounted for most of the variability found. Therefore, it appears that partial seed analysis for amino acids may be useful in genetic studies and for breeding selections.


Author(s):  
S.A. García Muñoz

Objetivo: Evaluar la germinación de cacahuate (Arachis hypogaea L.) mediante el uso de diferentes dosis de ácido giberélico (GA3). Diseño/metodología/aproximación: Se empleó un diseño completamente al azar. Se utilizaron tres tratamientos con 20 repeticiones. Tratamiento 1: 0.05gr/L de ácido giberélico (GA3), Tratamiento 2: 0.10gr/L de ácido giberélico (GA3), Tratamiento 3: 0.15gr/L de ácido giberélico (GA3) y Tratamiento 0: Testigo. Se utilizaron semillas de cacahuate de la variedad Virginia. Los parámetros a evaluar fueron, la altura de plántula, número de hojas, medida de raíz y biomasa.  Las medias fueron comparadas por la prueba de Tukey a un nivel del 5% de confianza. Resultados: Los tratamientos indicaron que el Tratamiento 0 (Testigo) obtuvo un porcentaje de germinación de 85%, siendo mayor que el tratamiento 3 (0.15gr/L de GA3) con un 75% de germinación, sin embargo, el tratamiento 1 (0.05gr/L de GA3) y 2 (0.10gr/L de GA3) presentaron una mejor respuesta al obtener un 95% de germinación cada uno. Limitaciones del estudio/implicaciones: El tratamiento 3 causa efectos negativos en la germinación de la planta. Hallazgos/conclusiones: Es necesario dar seguimiento a la investigación para un mejor control del ambiente y ampliar las dosis de GA3, así como aumentar la velocidad de germinación aplicando 0.15gr/L de GA3.


2001 ◽  
Vol 3 (1) ◽  
pp. 61-72 ◽  
Author(s):  
E. Diniz ◽  
C.L. Silva ◽  
M.B. Muniz ◽  
V.P. Queiroga ◽  
R.L.A. Bruno

2017 ◽  
Vol 5 (3) ◽  
pp. 342
Author(s):  
Rizal Mahdi Kurniawan ◽  
Heni Purnamawati ◽  
Yudiwanti Wahyu E. K

<p><em>Penelitian ini bertujuan untuk mempelajari pengaruh sistem tanam alur dan pemberian jenis pupuk terhadap pertumbuhan dan produksi kacang tanah (Arachis hypogaea L.). Penelitian dilaksanakan di KP Leuwikopo IPB Dramaga, Bogor pada bulan Februari - Juni 2013. Percobaan menggunakan rancangan petak terbagi (Split Plot Design) dengan perlakuan terdiri dari dua faktor, yaitu sistem tanam alur sebagai petak utama dan jenis pupuk sebagai anak petak. Hasil penelitian menunjukkan bahwa perlakuan sistem tanam alur meningkatkan daya hasil pada produktivitas biji kering, produktivitas polong kering, dan bobot kering biji per tanaman lebih baik dibandingkan sistem tanam konvensional. Hal tersebut ditunjukkan dengan perlakuan sistem tanam alur yang memiliki produktivitas 2.93 ton/ha polong kering, sedangkan sistem tanam konvensional sebesar 2.55 ton/ha polong kering. Sistem budidaya kacang tanah pada sistem tanam alur dapat meningkatkan efisiensi tanaman dalam memanfaatkan unsur hara yang telah diberikan baik pupuk organik maupun anorganik, sehingga pertumbuhan dan hasil tanaman kacang tanah menjadi lebih baik. Pemberian jenis pupuk kandang ayam + Dolomit + NPK memberikan respon terhadap pertumbuhan dan  daya hasil rata-rata tanaman yang lebih baik dibandingkan jenis pupuk lainnya.</em></p>


2019 ◽  
Vol 51 (3) ◽  
Author(s):  
Shamim Akhtar ◽  
Nazneen Bangash ◽  
Muhammad Sajjad Iqbal ◽  
Armghan Shahzad ◽  
Muhammad Arshad ◽  
...  

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