TaALMT1 and TaMATE1B allelic variability in a collection of Brazilian wheat and its association with root growth on acidic soil

The root growth of lucerne was examined in an acidic soil profile modified by varying additions of calcium carbonate to different layers of the subsoil. Root growth responded strongly to changes in the concentration of exchangeable soil calcium. Symptoms of thickening, distortion and poor lateral formation occurred under low calcium treatments. The results were in agreement with the interacting effects of calcium (at 0.5–5.0mM) and aluminium ions (at 0–20,µM) on lucerne in separate solution culture experiments. Differences in root penetration were observed between three lucerne clones selected from the cultivars Hunter River and Siro Peruvian. At the first harvest, the magnitude of these differences was increased by the addition of lime to the profiles. The three genotypes produced similar total dry weight yields, but differed in their distribution of growth between shoots and roots. This distribution was not affected by the addition of lime to the subsoil. However, the length of roots in the lower layer of the profile ( > 60 cm depth) was more responsive to subsoil treatment than was total dry weight. At the final harvest, the shoot yields of two genotypes were affected by lime treatments, but that of the deepest-rooted genotype was not. The results suggest that improved genotypes could be selected from Australian lucernes for establishment in areas with acidic subsoils, but that selection on root penetration alone would not necessarily lead to increased shoot yields.

Download Full-text

Nitrate leaching stimulates subsurface root growth of wheat and increases rhizosphere alkalisation in a highly acidic soil

Plant and Soil ◽

10.1007/s11104-009-0087-x ◽

2009 ◽

Vol 328 (1-2) ◽

pp. 119-132 ◽

Cited By ~ 27

Author(s):

C. Weligama ◽

P. W. G. Sale ◽

M. K. Conyers ◽

D. L. Liu ◽

C. Tang

Keyword(s):

Root Growth ◽

Nitrate Leaching ◽

Acidic Soil

Download Full-text

Integrated Nutrient Management Significantly Improves Pomelo (Citrus grandis) Root Growth and Nutrients Uptake under Acidic Soil of Southern China

Agronomy ◽

10.3390/agronomy11061231 ◽

2021 ◽

Vol 11 (6) ◽

pp. 1231

Author(s):

Xiaoman Huang ◽

Muhammad Atif Muneer ◽

Jian Li ◽

Wei Hou ◽

Changcheng Ma ◽

...

Keyword(s):

Root Growth ◽

Nutrient Uptake ◽

Nutrient Management ◽

Southern China ◽

Crop Productivity ◽

Acidic Soil ◽

Root Surface Area ◽

Integrated Nutrient Management ◽

Root Tips ◽

Npk Fertilizer

Root system plays a crucial role in plant growth and development by uptake of soil nutrients, which is affected by intensive use of NPK fertilizer. However, it is unknown how integrated nutrient management (INM) could affect the root growth and its nutrient uptake in the red soils of southern China. For this, the impacts of different INM practices on root morphological traits and root nutrient uptake were investigated in the pomelo tree. First, we investigated the spatial root distribution of various tree ages (i.e., 8, 13, 18, and 23 years old) and found the optimum root growth at 20–80 cm around the tree trunk in topsoil (0–20 cm). Hence, the pomelo trees were fertilized at 20–80 cm around the trunk, i.e., FFP (farmer fertilization practice), optimization NPK fertilizer (O) combined with lime (L) and mushroom residue (M) known as O+L+M treatment, and O+L combined with Mg fertilizer called as O+L+Mg treatment. We found that root length (RL) significantly increased by application of O+L+M (108.5 and 219.1 cm) and O+L+Mg (73.6, 66.8 cm) in topsoil and subsoil, respectively, in 2019. Similarly, root surface area (RSA) was significantly higher under INM, i.e., O+L+Mg > O+L+M > FFP. For root diameter (RD), O+L+M (0.8 mm) and O+L+Mg (1.5 mm) showed significantly lower diameter than FFP (2.54 mm). The root tips (RT) also improved considerably under INM practices compared with FFP. Besides, root nutrient contents (N, P, K, Ca, and Mg) also significantly improved under O+L+M and O+L+Mg over FFP. Overall, these findings suggest that INM plays a significant role in root development and nutrient uptake under acidic soil, which could be useful for maximizing crop productivity.

Download Full-text

Cadmium and copper change root growth and morphology of Pinus pinea and Pinus pinaster seedlings

Physiologia Plantarum ◽

10.1034/j.1399-3054.1994.920419.x ◽

1994 ◽

Vol 92 (4) ◽

pp. 675-680 ◽

Cited By ~ 3

Author(s):

Iduna Arduini ◽

Douglas L. Godbold ◽

Antonino Onnis

Keyword(s):

Root Growth ◽

Pinus Pinaster ◽

Pinus Pinea

Download Full-text

Root growth and statocyte polarity in lentil seedling roots grown in microgravity or on a slowly rotating clinostat

Physiologia Plantarum ◽

10.1034/j.1399-3054.1990.780406.x ◽

1990 ◽

Vol 78 (4) ◽

pp. 532-537 ◽

Cited By ~ 2

Author(s):

Giovanna Lorenzi ◽

Gerald Perbal

Keyword(s):

Root Growth ◽

Seedling Roots ◽

Lentil Seedling

Download Full-text

Genetic variation for rate of establishment in caucasian clover

Proceedings of the New Zealand Grassland Association ◽

10.33584/jnzg.1998.60.2282 ◽

1998 ◽

pp. 213-217

Author(s):

K.H. Widdup ◽

T.L. Knight ◽

C.J. Waters

Keyword(s):

Genetic Variation ◽

Root Growth ◽

Seedling Growth ◽

White Clover ◽

Seedling Emergence ◽

Red Clover ◽

Dry Weight ◽

Cool Season ◽

Trifolium Ambiguum ◽

Root Dry Weight

Slow establishment of caucasian clover (Trifolium ambiguum L.) is hindering the use of this legume in pasture mixtures. Improved genetic material is one strategy of correcting the problem. Newly harvested seed of hexaploid caucasian clover germplasm covering a range of origins, together with white and red clover and lucerne, were sown in 1 m rows in a Wakanui soil at Lincoln in November 1995. After 21 days, the caucasian clover material as a group had similar numbers of emerged seedlings as white clover and lucerne, but was inferior to red clover. There was wide variation among caucasian clover lines (48-70% seedling emergence), with the cool-season selection from cv. Monaro ranked the highest. Recurrent selection at low temperatures could be used to select material with improved rates of seedling emergence. Red clover and lucerne seedlings produced significantly greater shoot and root dry weight than caucasian and white clover seedlings. Initially, caucasian clover seedlings partitioned 1:1 shoot to root dry weight compared with 3:1 for white clover. After 2 months, caucasian clover seedlings had similar shoot growth but 3 times the root growth of white clover. Between 2 and 5 months, caucasian clover partitioned more to root and rhizome growth, resulting in a 0.3:1 shoot:root ratio compared with 2:1 for white clover. Both clover species had similar total dry weight after 5 months. Unhindered root/ rhizome devel-opment is very important to hasten the establishment phase of caucasian clover. The caucasian clover lines KZ3 and cool-season, both selections from Monaro, developed seedlings with greater shoot and root growth than cv. Monaro. KZ3 continued to produce greater root growth after 5 months, indicating the genetic potential for improvement in seedling growth rate. Different pasture estab-lishment techniques are proposed that take account of the seedling growth characteristics of caucasian clover. Keywords: establishment, genetic variation, growth, seedling emergence, Trifolium ambiguum

Download Full-text

Root growth and proline content in drought sensitive and tolerant maize (Zea maysL.) seedlings under different water potentials

Cereal Research Communications ◽

10.1556/crc.33.2005.2-3.137 ◽

2005 ◽

Vol 33 (4) ◽

pp. 697-704 ◽

Cited By ~ 8

Author(s):

Adriana Sánchez-Urdaneta ◽

Cecilia Peña-Valdivia ◽

Carlos Trejo ◽

J. Aguirre R. ◽

Elizabeth Cárdenas S.

Keyword(s):

Root Growth ◽

Proline Content ◽

Water Potentials

Download Full-text

Lupane Type Triterpene Isolated from the Leaves of Thecacoris Annobonea (Euphorbiaceae)

JOURNAL OF ADVANCES IN CHEMISTRY ◽

10.24297/jac.v12i10.5519 ◽

2013 ◽

Vol 12 (10) ◽

pp. 695-701

Author(s):

Herve Martial Poumale Poumale ◽

Alphonsine Nkapwa Guedem ◽

Louis Pergaud Sandjo ◽

Bonaventure Tchaleu Ngadjui ◽

Yoshihito Shiono

Keyword(s):

Antimicrobial Activity ◽

Root Growth ◽

Betulinic Acid ◽

Aristolochic Acid ◽

2D Nmr ◽

Aristolochic Acid I

A new lupane type triterpene (1), together with betulinic acid (2), friedelin (3), aristolochic acid I (4), alpinumisoflavone (5) and 4’-O-methylepinumisoflavone (6) have been isolated from the leaves of Thecacoris annobonea. The structure of the new compound was elucidated on the basis of 1 and 2D NMR experiments. The isolated compounds were evaluated for their phytotoxicity and antimicrobial activity. 1 exhibited significant antimicrobial activity at 30 μg/ml and compounds 1, 2, 3, 4, 5 and 6 inhibited root growth lettuce at 100 μg/ml.

Download Full-text