![](images/graphics/blank.gif)
Inbreeding depression studies
-
The purpose of our study is to identify native pollinators of watermelon and the yield enhancement potential of managed honey bees and stingless bees. Specifically, we asked the following questions: (i) Which are the most effective pollinators? (ii) Is there any pollination limitation (i.e. insufficient pollen transfer to stigma for optimum fruit set) of the plant species within the study areas? (iii) Is there any inbreeding depression? (iv) Which one is more suitable between the western honey bee (A. mellifera) and the stingless bee (T.
8p
schindler
30-12-2021
13
0
Download
-
Quantitative trait loci (QTL) mapping provides a powerful tool to unravel the genetic bases of cotton yield and its components, as well as their heterosis. In the present study, the genetic basis underlying inbreeding depression and heterosis for yield and yield components of upland cotton was investigated in recombinant inbred line (RIL), immortalized F2 (IF2), and two backcross (BCF1) populations based on a high-density SNP linkage map across four environments.
16p
viseulgi2711
31-08-2021
11
1
Download
-
Heterosis manifestation in tomato is in the form of the greater vigour, faster growth and development, earliness in maturity, increased productivity (Yordanov, 1983). So, by exploiting the heterosis for various yield contributing traits and earliness a speedy improvement in tomato can be done.
8p
cothumenhmong9
18-01-2021
11
2
Download
-
The present investigation was conducted at College Farm, N. M. College of Agriculture, Navsari Agricultural University, Navsari during kharif - 2016 with a view to study the heterosis and inbreeding depression in five crosses (each having P1, P2, F1, F2, BC1 and BC2 generations) of cow pea through a compact family block design with three replications.
9p
trinhthamhodang1215
23-09-2020
9
2
Download
-
In the present study, 20 diverse male parents (tester) and 5 female parents (male sterile lines) were used to develop 100 crosses in line x tester design. The magnitude of heterosis over mid parent value (H), better parent (HB) and hybrid check (SH) for grain yield per plant ranged...
9p
nguaconbaynhay7
15-08-2020
12
1
Download
-
A set of diallel crosses involving 10 diverse parents (excluding reciprocals) was made. Heterosis for grain yield per plant ranged from -21.95 to 39.65 per cent and -48.13 to 64.34 per cent under normal and late sown conditions, respectively. Out of 45 crosses fifteen crosses in both the sowing conditions exhibited positive significant heterosis while, nine crosses in normal and seven crosses in late sown condition exhibited positive significant heterobeltiosis.
10p
kethamoi5
03-06-2020
6
0
Download
-
The present investigation was carried out to the heterosis, inbreeding depression and residual heterosis for yield and yield attributing traits in segregating generations of okra (Abelmoschus esculentus L.). An experimental material comprised F2 and F3 segregation generation, two parents, F1 and one standard check (Parbhani kranti) were evaluated in a randomized block design with three replications during kharif 2017.
4p
trinhthamhodang1213
02-06-2020
12
0
Download
-
Inbreeding among farm animals is common practice to maintain purity of a specific population and also is unavoidable due to use of few male animals compared to large number of females in any animal breeding farm. Level of inbreeding practiced in a farm is very crucial as the inbreeding depression causes loss of productivity and vitality of the breeding animals. Measuring inbreeding coefficient needs pedigree of each animal which is often not maintained in most of farms, or is incorrect and limited to a very few generations.
6p
cothumenhmong5
17-05-2020
14
1
Download
-
In order to study inbreeding depression for yield and some of its associated characters in bread wheat (Triticum aestivum L.em. Thell) over the environments, the present experiment was carried out performing diallel analysis following Griffing (1956) Method II Model I. Ten genetically diverse parents were selected and crossed in half diallel fashion excluding reciprocals.
8p
trinhthamhodang5
16-05-2020
22
1
Download
-
Thirteen parental lines along with their 30 hybrid combinations produced by crossing in Line × Tester mating design were evaluated for heterosis and inbreeding depression of fruit quality traits and yield viz., total soluble solids (TSS), titratable acidity, ascorbic acid, fruit pH, lycopene, total sugars, reducing sugars, non-reducing sugars and total yield per plant.
5p
nguaconbaynhay5
11-05-2020
7
1
Download
-
Generation mean analysis with six generations, a set of 60 treatments (10P1, 10P2, 10 F1, 10 F2, 10 BC1 and 10 BC2) was chosen to study the nature and magnitude of gene effects for seed yield and yield attributing traits. The studies were undertaken on Randomized Block Design with three replications in Rabi 2015-16. The range of heterosis over better parent was observed from 9.07 to 50.57 per cent.
11p
cothumenhmong4
23-03-2020
23
2
Download
-
Five faba bean genotypes (Vicia faba L.) were selfed for two cycles to produce S1 and S2 generations. A half-diallel cross was carried out among them in each level of inbreeding (S0, S1 and S2) to obtain 10 F1 hybrids. Parental materials as well as their respective F1s were evaluated during the winter season of 2012. All studied traits except total dry seed yield showed significant inbreeding depression after the first generation of selfing (S1). No further decrease was noticed at the S2 generation. In the S1 generation the degree of inbreeding depression was highest for No.
10p
trinhthamhodang1
16-11-2019
13
1
Download
-
This study was carried out at the Department of Horticulture, Faculty of Agriculture, Çukurova University in spring 1999 and 2000. In the study, 46 doubled haploid lines produced by irradiated pollen technique and 10 original diploid genotypes were used as plant materials.
7p
aquaman27
15-01-2019
22
1
Download
CHỦ ĐỀ BẠN MUỐN TÌM
![](images/graphics/blank.gif)