Morphological and physiological traits of seeds and seedlings in two rice cultivars with contrasting early vigor

Huang, Min; Zhang, Ruichun; Chen, Jiana; Cao, Fuliang; Jiang, Ligeng; Zou, Yingbin

doi:10.1080/1343943x.2016.1229571

Cited by 21 publications

(14 citation statements)

References 26 publications

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“…The increased photosynthetic rate is mainly attributed, here, to increased LNC, which in turn might be related to higher SLW. This result is consistent with a previous outdoor pot experiment, where the increased leaf photosynthetic rate of rice cultivar Yuxiangyouzhan (25 days after sowing, compared to that of HHZ) was accompanied with higher leaf soluble protein level and higher SLW 85 , although there are also reports showing strong early vigor might result from a lower SLW, which means larger leaf area with the same leaf weight 30,71,86 .…”

Section: Discussionsupporting

confidence: 92%

Morphological and physiological factors contributing to early vigor in the elite rice cultivar 9,311

Shi

Chang

Chen

et al. 2020

Sci Rep

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Huanghuazhan (HHZ) and 9,311 are two elite rice cultivars in China. They have achieved high yield through quite different mechanisms. One of the major features that gives high yield capacity to 9,311 is its strong early vigor, i.e., faster establishment of its seedling as well as its better growth in its early stages. To understand the mechanistic basis of early vigor in 9,311, as compared to HHZ the cultivar, we have examined, under controlled environmental conditions, different morphological and physiological traits that may contribute to its early vigor. Our results show that the fresh weight of the seeds, at germination, not only determined the seedling biomass at 10 days after germination (DAG), but was also responsible for ~ 80% of variations in plant biomass between the two cultivars even up to 30 DAG. Furthermore, the 9,311 cultivar had a larger root system, which led to its higher nitrogen uptake capacity. Other noteworthy observations about 9,311 being a better cultivar than HHZ are: (i) Ten out of 15 genes involved in nitrogen metabolism were much more highly expressed in its roots; (ii) it had a higher water uptake rate, promoting better root-to-shoot nitrogen transfer; and (iii) consistent with the above, it had higher leaf photosynthetic rate and stomatal conductance. All of the above identified features explain, to a large extent, why the 9,311, as compared to HHZ, exhibits much more vigorous early growth.

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Section: Discussionsupporting

confidence: 92%

Morphological and physiological factors contributing to early vigor in the elite rice cultivar 9,311

Shi

Chang

Chen

et al. 2020

Sci Rep

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“…Seed weight and seed nutrient content affect plant growth at seedling stage 6 , 7 . Previous studies show a close relationship between seed size or weight and early vigor in rice 3 , 8 . In general, rice seed with thin hull and large embryo are desirable for seed vigor 8 .…”

Section: Introductionmentioning

confidence: 79%

“…Previous studies show a close relationship between seed size or weight and early vigor in rice 3 , 8 . In general, rice seed with thin hull and large embryo are desirable for seed vigor 8 . Seed weight was correlated with plant growth at low P supply up to the flowering stage in soybean, and the effect of seed weight at low P conditions was larger than that at high P conditions 6 .…”

Section: Introductionmentioning

confidence: 79%

Rapid evaluation of seed vigor by the absolute content of protein in seed within the same crop

Wen

Hou

Meng

et al. 2018

Sci Rep

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Seed vigor, an important index of seed quality, determines the potential for rapid and uniform emergence of plants. The objective of this study was to explore a rapid method for evaluating seed vigor. To analyze the correlation of seed traits and seedling traits related to seed vigor, we designed five experiments including nitrogen fertilizer, irrigation and seed sorting treatments in wheat. The results showed that only the absolute content of protein (ACP) in wheat seed was significantly correlated with plant dry weight in five experiments. Subsequently, another experiment including 30 wheat seed lots was used to validate the above results. Although 100-grain weight was also correlated with plant dry weight (R = 0.799, p < 0.01), the correlation coefficient was lower than that between ACP in seed and plant dry weight (R = 0.897, p < 0.01). Moreover, the results of three experiments using maize seeds was similar with above. The relative content of protein in seed detected by near-infrared spectrum combining with seed weight could realize rapid and nondestructive testing ACP in seed. Collectively, ACP in crop seed could be applied in rapid evaluation of seed vigor and could potentially be used for processing and screening high vigor seeds.

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“…High seed vigor is aligned with potential of increasing growth and productivity agricultural productivity. Seed weight and seed nutrient content gives impact to plant growth at seedling period [46,47]. Earlier studies done to showed a close relationship between seed size or seed weight and early vigor in rice which reveals that rice seed with thin hull and large embryo are preferable for seed vigor [48].…”

Section: Effect Of Salinity On Seed Vigormentioning

confidence: 99%

Impact of Salinity Stress on Germination of Water Spinach (Ipomoea aquatica)

Ibrahim

Abas

Zahra

2019

ARRB

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Aims: Salinity is one of the major abiotic stress that negatively affects plant growth in germination and early seedling stages. Salinity has becoming a serious problem as most of the parts of worldwide lands were affected by high salt concentration. Therefore, the effects of salinity ranging from 0 mM, 25 mM, 50 mM and 75 mM Sodium chloride (NaCl) concentrations on germination and early seedling growth of water spinach and their salt tolerance mechanism. Study Design: Completely Randomized Design (CRD). Place and Duration of Study: This study was conducted at Tissue Culture Laboratory, Department of Biology, Faculty of Science in University Putra Malaysia (UPM) from June to August, 2018. Methodology: In order to study the effects of salinity on water spinach, several parameters have been taken into account for measurement which include water uptake percentage, germination percentage, germination index, mean germination time, relative injury rate, seed vigor, seedling height reduction, hypocotyl and radicle length, seedling biomass, salt tolerance, total phenolic content and total flavonoids contents. Results: The results obtained showed that salinity adversely reduced water uptake efficiency, seed vigor, hypocotyl and radicle length, total phenolic content and total flavonoids content of water spinach. The seedling height reduction of water spinach increased significantly in relative to increasing salinity. However, seeds treated in mild salt concentration at 25 mM of NaCl showed an increment of germination percentage and germination index. Conclusion: Salt tolerance of water spinach increased as the response towards increasing salinity.

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Morphological and physiological traits of seeds and seedlings in two rice cultivars with contrasting early vigor

Cited by 21 publications

References 26 publications

Morphological and physiological factors contributing to early vigor in the elite rice cultivar 9,311

Morphological and physiological factors contributing to early vigor in the elite rice cultivar 9,311

Rapid evaluation of seed vigor by the absolute content of protein in seed within the same crop

Impact of Salinity Stress on Germination of Water Spinach (Ipomoea aquatica)

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