Interstate transportation; a treatise on the federal regulation of interstate transportation and common carriers, including jurisdiction of the Interstate commerce commission.

Second printing.

National infrastructure issues [microform] : hearing before the Subcommittee on Water Resources, Transportation, and Infrastructure of the Committee on Environment and Public Works, United States Senate, One Hundredth Congress, first session.

"January 21, 1988"--Pt. 3.

Reauthorization of the Intermodal Surface Transportation Efficiency Act : hearings before the Subcommittee on Transportation and Infrastructure and the Committee on Environment and Public Works, United States Senate, One Hundred Fifth Congress, first session.

"March 22, 1997--Coeur d'Alene, Idaho ... May 7 and June 6, 1997--Washington, DC"--Pt. 2.

Oversight of the federal-aid highway program : hearings before the Subcommittee on Water Resources, Transportation, and Infrastructure of the Committee on Environment and Public Works, United States Senate, One Hundred First Congress, first session ....

"August 21, 1989--Twin Falls, ID; August 22, 1989--Idaho Falls, ID"--Pt. 1; "November 11, 1989--Lewiston, MT"--Pt. 2.

Establish a Department of Transportation : hearings ... Eighty-ninth Congress, second session, on S. 3010, a bill to establish a Department of Transportation, and for other purposes.

Pt.1. March 29, 30, 1966. 232 p.--pt.2. May 3-5, 1966. pp. 233-422.--pp. 233-422.--pt.3. May 18, 19, 1966. pp.423-638.--pt.4. June 28, 29, 1966. pp. 639-743.

Combination in the anthracite industry : pressure on the consumer and the wage earner of concentration of control of Anthracite reserves, production, transportation and distribution of anthracite coal /

At head of title: Before the United States Anthracite Coal Commission.

The status of the Hellgate Railroad Viaduct in New York City : hearing before the Subcommittee on Water Resources, Transportation and Infrastructure of the Committee on Environment and Public Works, United States Senate, One Hundred First Congress, second session, May 16, 1990.

Cover title.

Use of the Interstate Highway System right-of-way for magnetic levitation high speed transportation systems : hearing before the Subcommittee on Water Resources, Transportation, and Infrastructure of the Committee on Environment and Public Works, United States Senate, One Hundredth Congress, second session, on S. 2072 ....

"September 28, 1988"--Pt. 2.

Aviation safety : Safer Skies Initiative has taken initial steps to reduce accident rates by 2007 : report to the Subcommittee on Aviation, Committee on Transportation and Infrastructure, House of Representatives /

"B-283391"--P. 5.

Defense traffic management regulation : transportation facility guide, Air Force : transportation and travel.

"11 April 1994"--Vol. 4.

Los Angeles red line : financing decisions could affect this and other Los Angeles County rail capital projects : report to the Chairman, Subcommittee on Transportation and Related Agencies, Committee on Appropriations, House Representatives /

"B-270347"--P. 1.

National Highway System Designation Act of 1995 : hearings before the Subcommittee on Transportation and Infrastructure of the Committee on Environment and Public Works, United States Senate, One Hundred Fourth Congress, first session, on S. 440, a bill to amend Title 23, United States Code ....

"March 30 and April 6, 1995"--Pt. 2.

Effect of seasonal variation and storage temperature on leaf chlorophyll fluorescence and vase life of cut roses

Low temperature injury (LTI) of roses (Rosa hybrida L.) is difficult to assess by visual observation. Relative chlorophyll fluorescence (CF; F-v/F-m) is a non-invasive technique that provides an index of stress effects on photosystem 11 (PS 11) activity. This instrumental technique allows determination of the photosynthetic efficiency of plant tissues containing chloroplasts, such as rose leaves. In the present study, pre- and Post-Storage measurements of F-v/F-m were carried out to assess LTI in 'First Red' and 'Akito' roses harvested year round. Relationships between the pre-harvest environment conditions of temperature, relative humidity and photon flux density (PFD), F-v/F-m, and, vase life duration after storage are reported. After harvest, roses were stored at 1, 5 and 10 degrees C for 10 days. Non-stored roses were the control treatment. F-v/F-m ratios were reduced following storage, suggesting LTI of roses. However, reductions in F-v/F-m were not closely correlated with reduced vase life duration and were seasonally dependent. Only during winter experiments was F-v/F-m of roses stored at 1 degrees C significantly (P <= 0.001) lower compared to F-v/F-m of non-stored control roses and roses stored at 5 and 10 degrees C. Thus, the fall of F-v/F-m was due to an interaction of growing season and storage at 1 degrees C. Vase lives of roses grown during winter were significantly (P <= 0.001) shorter compared to roses grown during summer. Length of vase life was intermediate for roses grown during autumn and spring. Because of the lack of correlation between F-v/F-m and post-storage vase life it is concluded that the CF parameter F-v/F-m is nota practical index for assessing LTI in cold-stored roses. Higher PFD and temperature in summer were positively and significantly correlated with maintenance of post-storage FvIF ratios and longer vase life. It is suggested that shorter vase lives and lower post-storage F-v/F-m values after storage at 1 degrees C are consequences of reduced photosynthesis and smaller carbohydrate pools in winter-harvested roses. (c) 2004 Elsevier B.V All rights reserved.