raw materials to redevelop leaf and shoot tissue ( Davidson and Mithorpe, 1966 ; Donaghy and Fulkerson, 1998 ; Morvan-Betrand et al., 1999 ).
The primary reserve carbohydrate of creeping bentgrass ( Agrostisstolonifera L.) is fructan. Fructan is
Creeping bentgrass ( Agrostisstolonifera L.) is a turfgrass species highly suitable for use on golf course tees, greens, and fairways. As a result of its ability to provide exceptional quality playing surfaces when mowed short, it is used
areas of ≈1500 m −2 each were then established in June 2006 with washed creeping bentgrass ‘Penncross’ ( Agrostisstolonifera L. cv. Penncross) sod (H&E Sod Nursery, Momence, IL) and allowed to acclimate for 3 weeks before initiation of routine
Root distribution in turfgrass systems influences drought tolerance and resource competition with undesirable species. We hypothesized that spatial localization of phosphorus (P) supply would permit manipulation of turfgrass root distribution. To test this hypothesis, creeping bentgrass (Agrostis stolonifera L.) plants were exposed to localized P supply in two experiments. The first experiment split the root zone horizontally into two different growth tubes and the second used alumina-buffered P (Al-P) to localize P availability deeper within a continuous root zone. In the horizontally split root zones, heterogeneous P availability led to no difference in shoot growth compared with uniform P availability. Root proliferation was greatest in the growth tube with available P compared with the growth tube without P. The use of Al-P, regardless of its spatial distribution, doubled root-to-shoot ratios compared with soluble P. Much of the increase in the ratio was accounted for by reduced shoot growth. Use of Al-P increased rooting deeper in the root zone, especially when the Al-P was mixed only in the lower portion of the root zone. Our results are consistent with the hypothesis that root distribution of creeping bentgrass can be manipulated by spatial localization of P supply in the root zone and indicate that relative biomass allocation to roots and shoots may be manipulated with buffered P sources.
A severe drought stress was imposed on a salinity-tolerant, creeping bent-grass population (‘Seaside’) under turf conditions. Salinity and osmotic stress resistance did not differ between clones collected before drought and after surviving drought stress. Survival under drought stress was greater for clones having higher heat tolerance and root/shoot ratio, but less leaf area and thinner stolons.
. Interspecific hybridization is common and these reticulation events are difficult to represent in bifurcating phylograms. Jones (1956a , 1956b , 1956c ) described the chromosome pairing behavior during metaphase I of meiosis among Agrostisstolonifera , A
transport. Cool-season turfgrass species such as Agrostisstolonifera are sensitive to heat stress and experience a series of physiological injuries when exposed to temperatures above 30 °C. Leaf senescence was observed after 20 d at 30 °C and only 8 d at
affected by expression of SAG12-ipt controlling cytokinin synthesis in Agrostisstolonifera J. Expt. Bot. 62 383 395 10.1093/jxb/erq285 Munns, R. 2002 Comparative physiology of salt and water stress Plant Cell Environ. 25 239 250 10.1046/j.0016
The use of drought-tolerant plants can reduce water consumption in the turfgrass industry ( Fry and Huang, 2004 ). Breeding of creeping bentgrass ( Agrostisstolonifera ), a golf course putting green species, has focused on biotic disease
Establishment and management practices for creeping bentgrass ( Agrostisstolonifera L.) are well understood as a result of its widespread popularity and use ( Beard, 1973 , 2002 ; Christians, 1998 ). Newer generations of creeping bentgrass