Abstract
Root traits are essential for optimising nutrient and water absorption and anchorage. However, changes in root traits and the contribution of root-to-shoot growth and development of soybean (Glycine max (L.) Merr.) across a century of breeding are poorly documented. In this study, we adopted a grafting technique, using 55 cultivars released in the three main soybean-production regions in China as rootstocks in a pot experiment and 24 cultivars from the Yellow-Huai-Hai Valley (YHH) region as rootstocks in a field experiment, with cv. Zigongdongdou as the common scion. Changes in soybean roots, including dry weight (DW) of roots, lateral root number (LRN) and taproot length (TRL), and their contribution to shoot development and biomass formation, including shoot DW, plant height and node number, were evaluated under optimal conditions in 2011. Aboveground traits declined with year of release in the YHH region and did not vary over time in the northern Heilongjiang province and mid-south Heilongjiang region except for shoot DW. The root traits root DW, LRN and TRL were similar over years of release in the pot and field experiments. The results suggest that the newer cultivars have lesser shoot growth and root capacity but the same amount of root growth as older cultivars. Root traits did not change during selection, suggesting that improvement in soybean root traits should be an aim in future breeding.
| Original language | English |
|---|---|
| Pages (from-to) | 585-594 |
| Number of pages | 10 |
| Journal | Crop & Pasture Science |
| Volume | 70 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - Aug 2019 |
Cite this
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Evaluation by grafting technique of changes in the contribution of root-to-shoot development and biomass production in soybean (Glycine max) cultivars released from 1929 to 2006 in China. / Cao, Xiaoning; Wu, Tingting; Sun, Shi; Wu, Cunxiang; Wang, Caijie; Jiang, Bingjun; Tao, Jinlu; Yao, Weiwei; Hou, Wensheng; Yang, Wenyu; Siddique, Kadambot H.M.; Han, Tianfu.
In: Crop & Pasture Science, Vol. 70, No. 7, 08.2019, p. 585-594.Research output: Contribution to journal › Article
TY - JOUR
T1 - Evaluation by grafting technique of changes in the contribution of root-to-shoot development and biomass production in soybean (Glycine max) cultivars released from 1929 to 2006 in China
AU - Cao, Xiaoning
AU - Wu, Tingting
AU - Sun, Shi
AU - Wu, Cunxiang
AU - Wang, Caijie
AU - Jiang, Bingjun
AU - Tao, Jinlu
AU - Yao, Weiwei
AU - Hou, Wensheng
AU - Yang, Wenyu
AU - Siddique, Kadambot H.M.
AU - Han, Tianfu
PY - 2019/8
Y1 - 2019/8
N2 - Root traits are essential for optimising nutrient and water absorption and anchorage. However, changes in root traits and the contribution of root-to-shoot growth and development of soybean (Glycine max (L.) Merr.) across a century of breeding are poorly documented. In this study, we adopted a grafting technique, using 55 cultivars released in the three main soybean-production regions in China as rootstocks in a pot experiment and 24 cultivars from the Yellow-Huai-Hai Valley (YHH) region as rootstocks in a field experiment, with cv. Zigongdongdou as the common scion. Changes in soybean roots, including dry weight (DW) of roots, lateral root number (LRN) and taproot length (TRL), and their contribution to shoot development and biomass formation, including shoot DW, plant height and node number, were evaluated under optimal conditions in 2011. Aboveground traits declined with year of release in the YHH region and did not vary over time in the northern Heilongjiang province and mid-south Heilongjiang region except for shoot DW. The root traits root DW, LRN and TRL were similar over years of release in the pot and field experiments. The results suggest that the newer cultivars have lesser shoot growth and root capacity but the same amount of root growth as older cultivars. Root traits did not change during selection, suggesting that improvement in soybean root traits should be an aim in future breeding.
AB - Root traits are essential for optimising nutrient and water absorption and anchorage. However, changes in root traits and the contribution of root-to-shoot growth and development of soybean (Glycine max (L.) Merr.) across a century of breeding are poorly documented. In this study, we adopted a grafting technique, using 55 cultivars released in the three main soybean-production regions in China as rootstocks in a pot experiment and 24 cultivars from the Yellow-Huai-Hai Valley (YHH) region as rootstocks in a field experiment, with cv. Zigongdongdou as the common scion. Changes in soybean roots, including dry weight (DW) of roots, lateral root number (LRN) and taproot length (TRL), and their contribution to shoot development and biomass formation, including shoot DW, plant height and node number, were evaluated under optimal conditions in 2011. Aboveground traits declined with year of release in the YHH region and did not vary over time in the northern Heilongjiang province and mid-south Heilongjiang region except for shoot DW. The root traits root DW, LRN and TRL were similar over years of release in the pot and field experiments. The results suggest that the newer cultivars have lesser shoot growth and root capacity but the same amount of root growth as older cultivars. Root traits did not change during selection, suggesting that improvement in soybean root traits should be an aim in future breeding.
KW - evolutionary change
KW - root traits
KW - shoot
KW - soybean
KW - SYMBIOTIC NITROGEN-FIXATION
KW - GENOTYPIC DIFFERENCES
KW - INTACT
KW - PHOSPHORUS
KW - ACCUMULATION
KW - EXUDATION
KW - TRAITS
KW - STRESS
KW - GROWTH
KW - LENGTH
UR - http://www.scopus.com/inward/record.url?scp=85069894345&partnerID=8YFLogxK
U2 - 10.1071/CP19052
DO - 10.1071/CP19052
M3 - Article
VL - 70
SP - 585
EP - 594
JO - Crop & Pasture Science
JF - Crop & Pasture Science
SN - 1836-0947
IS - 7
ER -