scholarly journals Identification of several small main-effect QTLs and a large number of epistatic QTLs for drought tolerance related traits in groundnut (Arachis hypogaea L.)

2010 ◽  
Vol 122 (6) ◽  
pp. 1119-1132 ◽  
Author(s):  
K. Ravi ◽  
V. Vadez ◽  
S. Isobe ◽  
R. R. Mir ◽  
Y. Guo ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Arachis Hypogaea ◽  
Epistatic Qtls ◽  
Arachis Hypogaea L ◽  
Main Effect ◽  
Main Effect Qtls

scholarly journals Identification of main effect and epistatic QTLs controlling initial flowering date in cultivated peanut (Arachis hypogaea L.)

2020 ◽  
Vol 19 (10) ◽  
pp. 2383-2393
Author(s):  
Liang WANG ◽  
Xin-lei YANG ◽  
Shun-li CUI ◽  
Ji-hong WANG ◽  
Ming-yu HOU ◽  
...  
Keyword(s):  
Arachis Hypogaea ◽  
Epistatic Qtls ◽  
Flowering Date ◽  
Arachis Hypogaea L ◽  
Main Effect ◽  
Cultivated Peanut

scholarly journals Screening for Drought Tolerance through Root Morphology and Yield Characters of Groundnut (Arachis hypogaea L.) Genotypes

2021 ◽  
pp. 95-105
Author(s):  
K. Manoj Kumar ◽  
S. Vincent ◽  
A. Mothilal ◽  
M. Raveendran ◽  
R. Anandham ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Root System ◽  
Arachis Hypogaea ◽  
Block Design ◽  
Root Trait ◽  
Abiotic Factor ◽  
Worldwide Production ◽  
Arachis Hypogaea L ◽  
Drought Resistant ◽  
Yield Character

Drought affects the rainfed groundnut (Arachis hypogaea L.)  at different phases of development and it is the serious threats on groundnut productivity causing losses than any other abiotic factor under rainfed agriculture. In the world's semiarid regions, groundnut accounts for 90% of worldwide production. Drought mainly affects the pace and pattern of nutrient and water intake from the soil, affecting the architecture of the groundnut root system. Plant selections with desirable root trait have been a major focus in developing drought resistant Groundnut cultivars. In 2019, 60 groundnut genotypes were cultivated in root block design with two different soil water treatments, as well as in the field during the year under same circumstances. The purpose of this study was to see how different groundnut cultivars fared in terms of yield, yield contributing features, root characters, and their relationships with drought tolerance. Drought resistant genotypes had thicker roots, larger roots, and a deeper root system than susceptible genotypes. Recent series in groundnut genotypes of 60 numbers were sown during kharif 2019 (july-september) under rainfed condition (It includes life irrigation and rainfall received during cropping season). Groundnut genotypes were semi spreading with the duration of 110-120 days. Observation on root morphological character viz., roots length, root volume after 20 days of stress imposition of the crop and yield parameters were observed at the harvest. Among the 60 genotypes, 20 genotypes (VG 17008, VG 17046, VG 18005, VG 18102, VG 18077, VG 19572, VG 19709, VG 18111, VG19561, VG19576, VG 19620, VG 19681, VG 19688 etc.,) similarly, yield character were observed for 60 genotypes and all the genotypes given above recorded higher value in Total number of pods per plant, Number of double seeded pods per plant, Pod yield per plant, Harvest index and Total dry matter production. The methods used in this study identified correlation between yield character and root characters. Groundnut genotypes by assessing yield metrics and their relationship with root trait. These findings lay the groundwork for future study aimed at deciphering the molecular pathways underpinning Groundnut drought resistance.

Detection of main-effect and epistatic QTL for yield-related traits in rice under drought stress and normal conditions

2014 ◽  
Vol 94 (4) ◽  
pp. 633-641 ◽  
Author(s):  
Wang Xing ◽  
Hongwei Zhao ◽  
Detang Zou
Keyword(s):  
Drought Stress ◽  
Crop Yields ◽  
Upland Rice ◽  
Recombinant Inbred Lines ◽  
Stress Conditions ◽  
Epistatic Qtls ◽  
Epistatic Qtl ◽  
Main Effect ◽  
Drought Resistant ◽  
Main Effect Qtls

Xing, W., Zhao, H. and Zou, D. 2014. Detection of main-effect and epistatic QTL for yield-related traits in rice under drought stress and normal conditions. Can. J. Plant Sci. 94: 633–641. Drought-resistant cultivars play an important role in maintaining high and stable crop yields under drought-stress conditions. However, the genetic mechanism of drought resistance must first be elucidated. Therefore, 220 recombinant inbred lines from a cross between Xiaobaijingzi (upland rice) and Kongyu 131 (Oryza sativa L.) were used to identify quantitative trait loci (QTLs) for yield and yield-component traits under drought stress and control conditions in Heilongjiang and Tieli. As a result, 23 main-effect QTLs and 11 digenic interactions were detected for four traits under the above two conditions. Of the main-effect QTLs, 10 and 8 were detected under control and drought-stress conditions, respectively; and five common QTLs were observed. In addition, five QTLs were found to be responsible for the difference across the two conditions. Among all epistatic QTLs, three types of epistatic QTLs were observed: one was between two main-effect QTLs, such as qPH-3-1 and qPH-7-2; one was between one locus with and another without main-effect, e.g., qPN-4 and qPN-3-2; and one was between two loci without main-effect, e.g., qYP-6-1 and qYP-12-2. In the above epistatic examples, their recombinant genotypes tended to reduce plant height and the number of grains per panicle and increase yield, respectively. Our results provide a good foundation for designed molecular breeding of drought-resistant rice.

scholarly journals Correction to: Identification of main effect and epistatic quantitative trait loci for morphological and yield-related traits in peanut (Arachis hypogaea L.)

2018 ◽  
Vol 38 (6) ◽  
Author(s):  
Yogendra Khedikar ◽  
Manish K. Pandey ◽  
V. Sujay ◽  
Sube Singh ◽  
Spurthi N. Nayak ◽  
...  
Keyword(s):  
Quantitative Trait Loci ◽  
Arachis Hypogaea ◽  
Quantitative Trait ◽  
Arachis Hypogaea L ◽  
Main Effect ◽  
Trait Loci

Biochemical Screening of Some Groundnut (Arachis hypogaea L.) Genotypes for Drought Tolerance

2001 ◽  
Vol 1 (11) ◽  
pp. 1009-1011 ◽  
Author(s):  
D.E. Jharna . ◽  
B.L.D. Chowdhury . ◽  
M.A. Haque . ◽  
M.R.H. Bhuiyan . ◽  
M.M. Husain .
Keyword(s):  
Drought Tolerance ◽  
Arachis Hypogaea ◽  
Biochemical Screening ◽  
Arachis Hypogaea L
Sign in / Sign up

Export Citation Format

Share Document