Adzuki bean (
Soybean [
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The
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Salinity stress is one of the important abiotic stresses in crops. In this study, ten different concentrations of NaCl solutions were tested to determine the optimal level of NaCl concentration for salinity tolerance test at the germination stage in peanut, and 0.6% NaC1 was suitable for the test. A total of 249 peanut accessions were tested with 0.6% NaC1 and radical root lengths of the accessions were measured. The results showed that there were significant genetic variations on the tolerance to salinity stress among the tested accessions. Through a Genome-Wide Association Study (GWAS) using the Axiom_Arachis array with 58K SNPs, three putative SNPs with significant relation to radicle root length were identified on chromosomes Aradu.A03, Araip.B01, and Araip.B05.
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Interspecific hybrids of eggplants (
Wheat is globally an important cereal crop. Environmental stress, especially drought stress can play an important role in the reduction of plant growth, specifically during germination in arid and semi-arid regions. Polyethylene glycol (PEG) treated hydroponic conditions create negative osmotic potential which is compared with moisture deficit stress. The main
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of this study was to investigate the effects of PEG 6000 induced moderate osmotic stress on germination indices of 22 wheat varieties. In order to study the effects of osmotic stress on germination indices in wheat cultivars, an experiment was conducted, using a completely randomized design with three replications under two different levels of PEG-6000: 0% and 10%. PEG stress significantly reduced percent germination, shoot length and root length. PEG stress significantly increased root-shoot ratio and oven dry weight. Principal component analysis revealed response of traits of tolerant wheat varieties under osmotic stress. Correlation study revealed the significant relationships among germination indices. The variety BARI Gom-30 recorded comparatively higher root length (6 cm), shoot length (7.8 cm), root-shoot ratio (1.37) followed by the variety Sonalika whereas the variety Kalaysona recorded the lowest root length (2.7 cm) and shoot length (2.8 cm) under PEG stress. Evolved information of this research including selected traits such as germination percentage, root-shoot ratio and dry weight of seedlings could be exploited in wheat breeding program for drought and osmotic stress tolerance.
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There is a growing preference for using doubled haploids (DHs) in maize breeding programs because they reduce the time required to generate and evaluate new lines to 2 years or less. However, there is an urgent need for efficient techniques that accurately discriminate between haploid and diploid maize kernels. Here, we investigate the effects of several hormones and chemicals on the germination of haploid and diploid maize kernels, including auxin, cytokinin, ethylene, abscisic acid (ABA) biosynthesis inhibitor (fluridone), ABA catabolism inhibitor (diniconazole), methyl jasmonate (MeJA), and NaCl. Ethylene effectively stimulated the germination of both haploid and diploid maize kernels. The ABA biosynthesis inhibitor fluridone, the ABA catabolism inhibitor diniconazole, and MeJA selectively stimulated the germination of haploid maize kernels. By contrast, gibberellin, 1-naphthaleneacetic acid (NAA), kinetin, and NaCl inhibited the germination of both haploid and diploid maize kernels. These results indicate that the germination of haploid maize kernels is selectively stimulated by fluridone and diniconazole, and suggest that ABA-mediated germination of haploid maize kernels differs from that of diploid maize kernels and other plant seeds.
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Maize (
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The increased severity and frequency of flooding is causing greater yield reductions in most rice-growing areas. To address this, popular cultivars were improved through introgression of
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