scholarly journals Fruit set and seed germination traits of Zygophyllum kaschgaricum

2019 ◽  
Vol 43 (5) ◽  
pp. 437-446
Author(s):  
ABDUSALAM Aysajan ◽  
ABULA Dilinaer ◽  
Kai ZHANG ◽  
TUERXUN Maireyemugu ◽  
ABDULRASHID Kadir ◽  
...  
Keyword(s):  
Seed Germination ◽  
Fruit Set ◽  
Germination Traits

scholarly journals QTL analysis of seed germination traits in tobacco (Nicotiana tabacum L.)

2021 ◽  
Author(s):  
Monika Agacka-Mołdoch ◽  
Mian Abdur Rehman Arif ◽  
Ulrike Lohwasser ◽  
Teresa Doroszewska ◽  
Ramsey S. Lewis ◽  
...  
Keyword(s):  
Nicotiana Tabacum ◽  
Seed Germination ◽  
Doubled Haploid ◽  
Mapping Population ◽  
Area Under The Curve ◽  
Linkage Groups ◽  
Polygenic Control ◽  
Nicotiana Tabacum L ◽  
Controlled Deterioration ◽  
Germination Traits

AbstractGenetic mapping of seed germination traits has been performed with many plant species. In tobacco, however, investigations are rare. In the present study, a bi-parental mapping population consisting of 118 doubled haploid lines and derived from a cross between ‘Beinhart-1000’ and ‘Hicks’ was investigated. Four germination-related traits, total germination (TG), normal germination (NG), time to reach 50% of total germination (T50), and the area under the curve after 200 h of germination (AUC) were considered by examining seeds either untreated or after a moderate controlled deterioration (CD). Quantitative trait loci were found for all traits distributed on 11 out of the 24 linkage groups. It was demonstrated that, as in many other species, germination-related traits are very complex and under polygenic control.

Seed germination traits can contribute better to plant community ecology

2016 ◽  
Vol 27 (3) ◽  
pp. 637-645 ◽  
Author(s):  
Borja Jiménez-Alfaro ◽  
Fernando A.O. Silveira ◽  
Alessandra Fidelis ◽  
Peter Poschlod ◽  
Lucy E. Commander
Keyword(s):  
Seed Germination ◽  
Community Ecology ◽  
Plant Community ◽  
Plant Community Ecology ◽  
Germination Traits

scholarly journals Comparative seed germination traits in bog and fen mire wetlands

2016 ◽  
Vol 130 ◽  
pp. 21-26 ◽  
Author(s):  
Eduardo Fernández-Pascual
Keyword(s):  
Seed Germination ◽  
Germination Traits

Seed germination of coastal monsoon vine forest species in the Northern Territory, Australia, and contrasts with evergreen rainforest

2018 ◽  
Vol 66 (3) ◽  
pp. 218 ◽  
Author(s):  
Vidushi Thusithana ◽  
Sean M. Bellairs ◽  
Christine S. Bach
Keyword(s):  
Seed Germination ◽  
Seed Storage ◽  
Pioneer Species ◽  
Physical Dormancy ◽  
Climax Species ◽  
Seed Biology ◽  
Light Requirements ◽  
Physiological Dormancy ◽  
Germination Traits ◽  
Prevalent Form

Seed germination traits of seasonal rainforest species differ from permanently moist evergreen rainforest species due to the prolonged seasonal drought. We investigated whether seed germination traits used to categorise evergreen rainforest species into pioneer and climax guilds were applicable to seasonal rainforest species. Seed dormancy, light requirements for germination and seed storage types of five climax and thirteen pioneer species of a coastal vine thicket were studied. Results were compared with published studies of evergreen rainforest species. Evergreen rainforest pioneer species are typically dormant, require light to germinate and tolerate desiccation, whereas climax species are typically non-dormant, tolerate shade during germination and are sensitive to desiccation. In seasonal rainforest we found that a high proportion of pioneer species had seeds that were non-dormant (62%), and a high proportion of pioneer species germinated equally well in light and dark conditions. In seasonal rainforest, we found that the majority of climax species had desiccation tolerant seeds, whereas in evergreen rainforest the proportion of climax species producing desiccation sensitive seeds is equal to or greater than the proportion of species with desiccation tolerant seeds. In seasonal rainforest species physical, physiological and epicotyl dormancy types were found. Generally, for seasonal rainforest species, the prevalent form of dormancy in pioneer species was physical dormancy whereas physiological dormancy was most common in evergreen rainforest pioneer species with dormancy. Our results suggest that the contrasting seed biology traits that typically apply to pioneer and climax species of evergreen rainforest species don’t typically apply to seasonal rainforest species.

The effect of temperature on fruit set, seed set and seed germination in ‘Sonia’ × ‘Hadley’ hybrid Tea-rose crosses

Euphytica ◽  
1987 ◽  
Vol 36 (1) ◽  
pp. 117-120 ◽  
Author(s):  
D. P. De Vries ◽  
Lidwien A. M. Dubois
Keyword(s):  
Seed Germination ◽  
Fruit Set ◽  
Seed Set ◽  
Effect Of Temperature

scholarly journals Identification and fine mapping of a novel qGR6.2 locus controlling rice salt tolerance during seed germination

2020 ◽  
Author(s):  
Peng Zeng ◽  
Peiwen Zhu ◽  
Luofeng Qian ◽  
Xumei Qian ◽  
Yuxin Mi ◽  
...  
Keyword(s):  
Salt Tolerance ◽  
Seed Germination ◽  
Candidate Genes ◽  
Fine Mapping ◽  
Developmental Stages ◽  
Indica Rice ◽  
Germination Rate ◽  
Differentially Expressed ◽  
Germination Ability ◽  
Germination Traits

Abstract Background Rice growth is frequently affected by salinity. When rice plants are exposed to high salinity, seed germination and seedling establishment are significantly inhibited. In particular, with the promotion of rice direct-seeding in Asia, improving rice salt tolerance during seed germination is of strong importance for rice breeding. Results In this study, we found that the indica rice landrace Wujiaozhan (WJZ) showed a high capability of seed germination under both water (H 2 O) and salt (NaCl) conditions, particularly under high salt stress. The BC 1 F 2 population produced by crossing WJZ with japonica Nipponbare (Nip) was used to evaluate the germination traits under water (H 2 O) and salt (300 mM NaCl) conditions using germination rate (GR) and germination index (GI). A total of 13 quantitative trait loci (QTLs) were identified, including eight QTLs of GR, two QTLs of GI under H 2 O conditions, six QTLs of GR, and three QTLs of GI under 300 mM NaCl conditions. Six QTLs ( qGR6.1 , qGR8.1 , qGR8.2 , qGR10.1 , qGR10.2 and qGI10.1 ) contributed to GR under both H 2 O and 300 mM NaCl conditions. Three QTLs ( qGR6.2 , qGR10.1 and qGR10.2 ) under 300 mM NaCl conditions were identified at different time points of seed germination and shared the same region with qGI6 , qGI10.1 and qGI10.2 for GI. These QTLs could be used to improve seed germination ability via marker-assisted selection (MAS). One major effective salt-tolerance-specific QTL, qGR6.2, on chromosome 6 was further confirmed via the BC 2 F 2 population, which explained more than 20% of the phenotypic variation. Fine mapping results showed that qGR6.2 was narrowed to a 65.9-kb region between the Z654 and Z619 molecular markers, with eleven candidate genes being predicted. Based on the microarray database, there were high transcript abundances of six genes ( LOC_Os06g10650 , LOC_Os06g10660 , LOC_Os06g10690 , LOC_Os06g10710 , LOC_Os06g10730 and LOC_Os06g10750 ) at all developmental stages, and only LOC_Os06g10750 was differentially expressed after salt incubation. RT-qPCR showed that two genes ( LOC_Os06g10650 and LOC_Os06g10750 ) were significantly differentially expressed at 300 mM NaCl during seed germination. This result suggested that LOC_Os06g10650 and LOC_Os06g10750 might be the causal candidate genes for the major effective salt-tolerance-specific QTL qGR6.2 identified in WJZ, which may facilitate map-based cloning and help to elucidate the molecular mechanism underlying salt tolerance during seed germination. Conclusions In our study, we identified 13 QTLs from indica landrace WJZ that confer seed germination traits under water and salt conditions. A major salt-tolerance-specific QTL qGR6.2 was confirmed and fine mapped to a 65.9-kb region flanked by the Z654 and Z619 markers. Our results provide information on the genetic basis of improving salt tolerance during seed germination by MAS.

scholarly journals ADAPTIVE RESPONSES TO SALINITY: SEED GERMINATION TRAITS OF SONNERATIA APETALA ALONG SALINITY GRADIENT IN SUNDARBANS, BANGLADESH

2020 ◽  
Vol 32 (2) ◽  
pp. 179-186
Author(s):  
S Nasrin ◽  
M Hossain ◽  
MR Hasan-Siddique ◽  
M Masudur-Rahman
Keyword(s):  
Seed Germination ◽  
Salinity Gradient ◽  
Adaptive Responses ◽  
Sonneratia Apetala ◽  
Germination Traits

scholarly journals Seed germination analysis in germplasm of capsicum annum

2017 ◽  
Vol 12 (3) ◽  
Author(s):  
Alexander Ray Rayiappan ◽  
Zulaikha Sarobo ◽  
Muhammad Arshad Javed
Keyword(s):  
Seed Germination ◽  
Room Temperature ◽  
Daily Life ◽  
Germination Percentage ◽  
Peak Period ◽  
Mean Values ◽  
Capsicum Annum ◽  
Significant Difference ◽  
Varietal Response ◽  
Germination Traits

Capsicum annum is commercially cultivated due to its nutritional and pharmaceutical values. It is particularly important in Malaysia due to its abundant use in daily life food. Although it is warm seasonal plant, its productivity is not high in tropical environment. High seed germination is the prerequisite for good seedling establishment. Present study is conducted to study the varietal response for germination traits in diverse capsicum germplasm.  Five germination traits were focused e.g.  Final germination percentage (FGP), speed of germination (SG), initiation of germination (IG), days to 50% germination (R50) and peak period of germination (GP). Seeds of each variety were kept in triplicate at room temperature using Yoshida medium coupled with photoperiod of 14 hours for two weeks. Mean values for FGP (81%), SG (rate=2), IG (9th day) and R50 (10th day) and GP (12th day) were observed in 93 varieties. Analysis of variance (ANOVA) showed significant difference for all germination traits, reflecting that present germplasm is diverse for germination traits. These findings would be useful to improve the germination traits in capsicum hybridization programs.

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