Standard heterosis

The study was undertaken to evaluate the magnitude of heterosis in 36 cotton hybrids developed by crossing 3 lines and 12 testers in L x T design at three different locations of Maharashtra State viz., Akola, Amravati and Nagpur during kharif, 2017-18. The cross AKH 8828 x AKH 9916 exhibited highest and significant heterosis over the check PKV Hy-2 for seed cotton yield/plant (60.30 %), number of bolls/plant (23.55 %) and fibre strength (10.43 %) across the environments.

15p chauchaungayxua12 29-07-2021 8 1   Download

Present investigation was carried out in Kharif 2019 at Experimental Area, Department of Plant Breeding and Genetics, Bihar Agricultural University, Sabour, Bhagalpur with seven parental inbred lines and their twenty one F1’s generated through half diallel matting scheme during Rabi, 2018-19.

11p caygaocaolon11 21-04-2021 11 1   Download

Standard heterosis over one check (DVRT-1) was experimented with thirty hybrids of tomato. Most of these hybrids proved to have unique variation for growth and yield traits in tomato. Standard heterosis over check for total yield/plant was recorded 99.76 %.

7p chauchaungayxua10 19-03-2021 12 2   Download

The present study an attempt is made to evaluate the public bred hybrids to know their combining ability, heterosis, resistance to TLB, drought tolerance and productivity traits.

11p chauchaungayxua10 19-03-2021 14 1   Download

The present investigation was carried out in 21 F1s to study heterobeltiosis and standard heterosis for nine yield attributing traits of barley crop. The F1s were generated by crossing seven lines with three testers in Line x Tester mating design.

7p chauchaungayxua10 18-03-2021 6 2   Download

In the present investigation, thirteen parents were selected on the basis of divergence. They were mated in line × tester mating design to raise hybrids and relative heterosis, heterobeltiosis and standard heterosis was measured for different yield attributes.

11p cothumenhmong9 18-01-2021 10 2   Download

The present investigation was undertaken with the objectives to assess the magnitude of heterosis and combining ability effects of 35 hybrids resulted from Line x Tester mating design involving seven lines and five testers parents along with the standard check (GHB 558).

8p cothumenhmong9 18-01-2021 14 2   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

In the present study crosses from 3 lines and 6 testers evaluated for standard heterosis, heterobeltiosis and relative heterosis for fresh root yield, dry root yield, root length,root girth, fiber content, carbohydrate content,50% flowering and secondary roots (Fig. 1). The heterosis is presented in Table 1.

11p cothumenhmong9 18-01-2021 19 2   Download

Twenty seven pigeonpea [Cajanus cajan (L.) Millsp.] hybrids were developed by hand pollination using three CMS lines (A lines) and nine testers (R lines). These hybrids along with their parents and two standard checks (VL Arhar1 and ICPL 161) were evaluated in a randomized block design with three replications during kharif 2016-17 for the heterosis studies.

11p cothumenhmong9 18-01-2021 13 1   Download

An experiment was conducted to exploit heterosis in F1 hybrids of sweet sorghum (Sorghum bicolor L.) and to identify parents with desirable genetic effects with respect to single-cut green fodder yield and its component traits. 48 F1 hybrids were evaluated to assess general and specific combining ability and gene action governing the green fodder yield and its attributing traits.

9p cothumenhmong9 04-01-2021 14 2   Download

In the present study, a set of 30 hybrids derived from crosses between 10 tropical japonica lines and 3 indica were analyzed for heterosis, per-day productivity, yield efficiency and an association index were established between yield and molecular marker amplification pattern.

9p gaocaolon9 22-12-2020 15 2   Download

Half-diallel crossing had been used by several researchers to evaluate parents in all possible combinations excluding reciprocals to estimate heterosis in okra. By keeping above points in mind, the present investigation was framed using half diallel matting design.

8p trinhthamhodang9 16-12-2020 11 2   Download

Five lines and ten testers were crossed in line x tester design to produce 50 cross combinations in order to identify the high yielding and early flowering post rainy sorghum hybrids. Promising hybrids were sorted out based on positive significant standard heterosis for grain yield along with negative significant standard heterosis for days to maturity.

5p trinhthamhodang9 16-12-2020 10 1   Download

The phenomenon of heterosis has provided the most important genetic tools in improving yield of crop plants. Identification of specific parental combination capable of producing the highest level of heterotic effects in F1 has immense value for commercial exploitation of heterosis.

9p nguathienthan8 20-10-2020 19 2   Download

The present investigation was carried out in two different seasons with aim to assess the heterobeltosis and standard heterosis in bottle gourd. The present study was comprised of 45 crosses developed through diallel mating design using 10 parents namely, NDBG-49-2 (P1), N. Rashmi (P2), N. Prabha (P3), N. Pooja (P4), Pusa Naveen (P5), Pb. Komal (P6), NDBG S-1 (P7), PBOG-3 (P8), NDBG-11 (P9) and Faizabadi Local (P10) at MES, Vegetable Science, NDUA&T, Kumarganj, Faizabad (U.P.) India during kharif 2015 (E1), and Rabi, 2015-16 (E2).

14p nguathienthan8 20-10-2020 13 1   Download

The present study was conducted at three locations during kharif 2014-15 with 72 interspecific hybrids along with their parents and two standard checks to elicit information on combining ability effects, gene action and heterosis of inter-specific hybrids over environments for yield and yield components.

14p nguathienthan8 20-10-2020 17 2   Download

An experiment was conducted to evaluate the performance of 54 F1 developed by crossing of 18 lines with 3 testers. Analysis of variance revealed highly significant difference in treatments, parents, crosses and line × tester for days to 50% flowering, plant height, flag leaf area and grain yield per plant under both normal and saline conditions. Parent vs.

14p nguathienthan8 20-10-2020 18 2   Download

Heterosis is one of the greatest practical achievements of plant breeding and has been extensively used in crop improvement in okra. The production of hybrid cultivars with higher fruit yield and quality characters has become increasingly important in recent years due to continuous demand. In the present study, 14 genetically diverse okra parents were crossed in Line x Tester fashion to explore magnitude of heterosis.

11p nguaconbaynhay8 13-10-2020 14 1   Download

The present investigation entitled studies on heterosis for yield and its components of bitter gourd (Momordica charantia L.) using 9 parents and 1 standard variety and their 36 crosses for 11 quantitive traits was carried out in summer and rainy seasons of 2015. The analysis of variance for experimental design revealed the existence of adequate genetic variability in experimental material for all traits under study.

9p nguaconbaynhay8 13-10-2020 16 2   Download