PMID- 37580436
OWN - NLM
STAT- MEDLINE
DCOM- 20230816
LR  - 20231121
IS  - 2045-2322 (Electronic)
IS  - 2045-2322 (Linking)
VI  - 13
IP  - 1
DP  - 2023 Aug 14
TI  - Identification of new cold tolerant Zoysia grass species using high-resolution 
      RGB and multi-spectral imaging.
PG  - 13209
LID - 10.1038/s41598-023-40128-2 [doi]
LID - 13209
AB  - Zoysia grass (Zoysia spp.) is the most widely used warm-season turf grass in 
      Korea due to its durability and resistance to environmental stresses. To develop 
      new longer-period greenness cultivars, it is essential to screen germplasm which 
      maintains the greenness at a lower temperature. Conventional methods are 
      time-consuming, laborious, and subjective. Therefore, in this study, we 
      demonstrate an objective and efficient method to screen maintaining longer 
      greenness germplasm using RGB and multispectral images. From August to December, 
      time-series data were acquired and we calculated green cover percentage (GCP), 
      Normalized Difference Vegetation Index (NDVI), Normalized Difference Red Edge 
      Index (NDRE), Soil-adjusted Vegetation Index (SAVI), and Enhanced Vegetation 
      Index (EVI) values of germplasm from RGB and multispectral images by applying 
      vegetation indexs. The result showed significant differences in GCP, NDVI, NDRE, 
      SAVI, and EVI among germplasm (p < 0.05). The GCP, which evaluated the quantity 
      of greenness by counting pixels of the green area from RGB images, exhibited 
      maintenance of greenness over 90% for August and September but, sharply decrease 
      from October. The study found significant differences in GCP and NDVI among 
      germplasm. san208 exhibiting over 90% GCP and high NDVI values during 153 days. 
      In addition, we also conducted assessments using various vegetation indexes, 
      namely NDRE, SAVI, and EVI. san208 exhibited NDRE levels exceeding 3% throughout 
      this period. As for SAVI, it initially started at approximately 38% and gradually 
      decreased to around 4% over the course of these days. Furthermore, for the month 
      of August, it recorded approximately 6%, but experienced a decline from about 9% 
      to 1% between September and October. The complementary use of both indicators 
      could be an efficient method for objectively assessing the greenness of turf both 
      quantitatively and qualitatively.
CI  - (c) 2023. Springer Nature Limited.
FAU - Ku, Ki-Bon
AU  - Ku KB
AD  - Department of Plant Resources and Environment, Jeju National University, Jeju, 
      63243, Republic of Korea.
FAU - Mansoor, Sheikh
AU  - Mansoor S
AD  - Department of Plant Resources and Environment, Jeju National University, Jeju, 
      63243, Republic of Korea.
FAU - Han, Gyung Deok
AU  - Han GD
AD  - Department of Practical Arts Education, Cheongju National University of 
      Education, Cheongju, 28708, Republic of Korea.
FAU - Chung, Yong Suk
AU  - Chung YS
AD  - Department of Plant Resources and Environment, Jeju National University, Jeju, 
      63243, Republic of Korea. yschung@jejunu.ac.kr.
FAU - Tuan, Thai Thanh
AU  - Tuan TT
AD  - Department of Plant Resources and Environment, Jeju National University, Jeju, 
      63243, Republic of Korea. thaithanhtuan1987@gmail.com.
LA  - eng
PT  - Journal Article
PT  - Research Support, Non-U.S. Gov't
DEP - 20230814
PL  - England
TA  - Sci Rep
JT  - Scientific reports
JID - 101563288
RN  - 0 (Soil)
SB  - IM
MH  - *Poaceae
MH  - Seasons
MH  - *Soil
MH  - Temperature
MH  - Cold Temperature
PMC - PMC10425389
COIS- The authors declare no competing interests.
EDAT- 2023/08/15 00:42
MHDA- 2023/08/16 06:42
PMCR- 2023/08/14
CRDT- 2023/08/14 23:23
PHST- 2023/05/18 00:00 [received]
PHST- 2023/08/04 00:00 [accepted]
PHST- 2023/08/16 06:42 [medline]
PHST- 2023/08/15 00:42 [pubmed]
PHST- 2023/08/14 23:23 [entrez]
PHST- 2023/08/14 00:00 [pmc-release]
AID - 10.1038/s41598-023-40128-2 [pii]
AID - 40128 [pii]
AID - 10.1038/s41598-023-40128-2 [doi]
PST - epublish
SO  - Sci Rep. 2023 Aug 14;13(1):13209. doi: 10.1038/s41598-023-40128-2.