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Title:   Author  item
                                            BAJAJ, S - NMSUitem
                                            WANG, W - NMSUitem
                                            Hughs, Sidneyitem
                                            Percy, Richarditem
                                            Ulloa, Mauricioitem
                                            ZHANG, JINFA - NMSU
  Submitted to: National Cotton Council Beltwide Cotton Conference
                                    Publication Type: Proceedings
                                    Publication Acceptance Date: 5/30/2008
                                    Publication  Date: 6/1/2008
                                    Citation: Bajaj, S., Wang, W., Hughs, S.E., Percy, R.G., Ulloa, M., Zhang, J. 2008. Evaluation of cotton germplasm and breeding populations for salt tolerance. National Cotton Council Beltwide Cotton Conference, January 8-11, 2008, Nashville, TN. 2008 CDROM.Interpretive Summary: A total of 211 cotton germplasm and breeding lines were tested in the greenhouse for salt tolerance.  Test treatment consisted of a 200 mM salt (NaCl) versus a control of tap water applied on alternate days from planting to end of test.  Plant data used to evaluate salt tolerance consisted of germination percentage, cotyledon length, first true leaf length, plant height, plant fresh weight, and plant by weight.  Based on the these data, 20 of the 211 entries were judged to be salt tolerent.
                                Technical Abstract: Three experiments were conducted in 2005 and 2007 to evaluate a total of 211 cotton germplasm and breeding lines for salt tolerance in the greenhouses. The randomized complete block designs with two or three replications were employed for those experiments. 200 mM salt solutions or tap water were applied on alternate days for 21 to 30 days after planting or emergence. Data for the seedling and plant characteristics such as germination percentage, cotyledon length, first true leaf length, plant height, plant fresh weight, and plant dry weight were collected to compare control and treated plants. Genotypes and breeding lines that showed the lowest reduction in parameters of overall seedling and plant characteristics were considered salt tolerant. They were JAJO 1145, STV 4892 BR, STV 5599 BR, STV 4575 BR, DPL 555 BR, NM 03K1001, SG 747, 1517-88, 1517-SR2, and DPL 444 BR from experiment I, and PHY 72, AR 9314-24-16, FM 960 BR, FM 958 LL, STV 4575 BR, STV 6636 BR, TAM 98D-102, NM 03K1001, HA 195, and DP 444 BR from Experiment II. Thirty back-crossed inbred lines (BIL) out of 146 entries that showed more salt tolerance than parents (checks) from Experiment III were also selected for further genetic studies.


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