scholarly journals Effect of drought stress on yield and yield components of some sunflower recombinant inbred lines

2013 ◽  
pp. 50-56 ◽  
Author(s):  
Banaei-Asl Farzad
Keyword(s):  
Drought Stress ◽  
Recombinant Inbred ◽  
Yield Components ◽  
Recombinant Inbred Lines ◽  
Inbred Lines ◽  
Yield And Yield Components

Genetic dissection of heat and drought stress QTLs in phenology-controlled synthetic-derived recombinant inbred lines in spring wheat

2019 ◽  
Vol 39 (3) ◽  
Author(s):  
Caiyun Liu ◽  
Sivakumar Sukumaran ◽  
Etienne Claverie ◽  
Carolina Sansaloni ◽  
Susanne Dreisigacker ◽  
...  
Keyword(s):  
Drought Stress ◽  
Spring Wheat ◽  
Recombinant Inbred ◽  
Recombinant Inbred Lines ◽  
Inbred Lines ◽  
Genetic Dissection

Characterization of flowering time response among recombinant inbred lines of WAB638-1/PRIMAVERA rice under reproductive stage drought stress

2021 ◽  
pp. 1-8
Author(s):  
Kehinde A. Adeboye ◽  
Olusegun A. Oduwaye ◽  
Isaac O. Daniel ◽  
Mamadou Fofana ◽  
Mande Semon
Keyword(s):  
Drought Stress ◽  
Flowering Time ◽  
Recombinant Inbred ◽  
Root Length ◽  
Recombinant Inbred Lines ◽  
Block Design ◽  
Field Trials ◽  
Inbred Lines ◽  
Reproductive Stage ◽  
Time Response

Abstract Ninety-eight high-yielding recombinant inbred lines (RILs) of WAB638-1/PRIMAVERA rice were evaluated with the parents under reproductive stage drought stress. The study aimed at characterizing flowering time response under drought stress and consequently classifying the genetic resources for efficient use in breeding programmes. Two field trials were conducted during the 2016 and 2017 dry seasons using the randomized complete block design with two replications. In 2016, 12 RILs were evaluated with the parents for the rooting attributes under drought stress and well-watered treatments. Analysis of variance revealed a significant (P < 0.05) variation among the genotypes for the traits evaluated. Drought stress reduced most of the characters in this study, including grain yield. However, the inbred lines exhibited considerable tolerance to drought stress as indicated by yield-related stress indexes, including stress susceptibility and drought tolerance indexes. Delayed flowering (FD) was recorded in 75 genotypes (including WAB638-1), while 25 genotypes (including PRIMAVERA) had no delay under drought stress compared to the control. The genotypes were grouped into flowering delay (D) genotypes (FD > 1 d) and no delay (N) genotypes (FD < 1 d), which significantly differ (P ⩽ 0.05) for numbers of days to 50% flowering. The flowering delay genotypes may be suitable for intermittent drought, while genotypes with little or no delay may be selected for terminal drought conditions. There was a significant correlation (r > 0.5) between the root length and number of days to 50% flowering. The study indicated that root parameters, such as the root length, may contribute to the drought adaptation mechanisms of the RILs.

Diversity array technology (DArT)-based mapping of phenotypic variations among recombinant inbred lines of WAB638-1/PRIMAVERA under drought stress

Euphytica ◽  
2021 ◽  
Vol 217 (6) ◽  
Author(s):  
Kehinde A. Adeboye ◽  
Mande Semon ◽  
Oyeboade A. Oyetunde ◽  
Olusegun A. Oduwaye ◽  
Ayotunde O. Adebambo ◽  
...  
Keyword(s):  
Drought Stress ◽  
Recombinant Inbred ◽  
Recombinant Inbred Lines ◽  
Inbred Lines ◽  
Diversity Array Technology ◽  
Array Technology ◽  
Phenotypic Variations

Diverse sources of resistance to Spodoptera litura (F.) in groundnut

2019 ◽  
Vol 79 (01S) ◽  
Author(s):  
M. A. Saleem ◽  
G. K. Naidu ◽  
H. L. Nadaf ◽  
P. S. Tippannavar
Keyword(s):  
Recombinant Inbred ◽  
Spodoptera Litura ◽  
Hot Spot ◽  
Recombinant Inbred Lines ◽  
Insect Pest ◽  
Inbred Lines ◽  
Leaf Damage ◽  
Botanical Variety ◽  
Resistant Genotypes ◽  
Botanical Varieties

Spodoptera litura an important insect pest of groundnut causes yield loss up to 71% in India. Though many effective chemicals are available to control Spodoptera, host plant resistance is the most desirable, economic and eco-friendly strategy. In the present study, groundnut mini core (184), recombinant inbred lines (318) and elite genotypes (44) were studied for their reaction to Spodoptera litura under hot spot location at Dharwad. Heritable component of variation existed for resistance to Spodoptera in groundnut mini core, recombinant inbred lines and elite genotypes indicating scope for selection of Spodoptera resistant genotypes. Only 29 (15%) genotypes belonging to hypogaea, fastigiata and hirsuta botanical varieties under mini core set, 15 transgressive segregants belonging to fastigiata botanical variety among 318 recombinant inbred lines and three genotypes belonging to hypogaea and fastigiata botanical varieties under elite genotypes showed resistance to Spodoptera litura with less than 10% leaf damage. Negative correlation existed between resistance to Spodoptera and days to 50 per cent flowering indicating late maturing nature of resistant genotypes. Eight resistant genotypes (ICG 862, ICG 928, ICG 76, ICG 2777, ICG 5016, ICG 12276, ICG 4412 and ICG 9905) under hypogaea botanical variety also had significantly higher pod yield. These diverse genotypes could serve as potential donors for incorporation of Spodoptera resistance in groundnut.

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