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Articles by A. R. Soomro
Total Records ( 11 ) for A. R. Soomro
  G. N. Panhwar , A. R. Soomro , Rehana Anjum , Saira Bano Babar , A. M. Memon and A. W. Soomro
  Two preliminary earliness indicators (days taken to open first flower and main stem node number of first sympodial branch) were evaluated in an experiment, to check their reliability and also to screen out most early varieties for further exploitation in breeding programs as well as at the farmers fields. The results demonstrated that DNH-49 significantly opened its first flower (44 DAP) earlier than other strains hence was observed as early maturing variety followed by CRIS-82 (45 DAP). CIM-482 opened its first flower after 48 days of planting and was observed as late, followed by FH-900 (47 DAP). As regards the second character (node number of first sympodial branch), the same trend of earliness was observed as in days taken to open first flower. Accordingly, DNH-49 produced significantly lowest main stem node number of first sympodial branch (7.1) and was recorded as early followed by CRIS-82 (7.2) and NIAB-999 (7.3). CIM-482 and FH-900 were observed as late strains in the test which produced significantly highest main stem node number of first sympodial branch (8.6) followed by BH-121 (8.5). The results demonstrated that the two indicators studied are reliable and efficient while predicting the earliness of any variety during the crop development stage.
  Saira Bano Babar , A. R. Soomro , Rehana Anjum , A. M. Memon and A. W. Soomro
  Two preliminary earliness indicators (main stem node number of first sympodial branch and days taken to open first flower) were evaluated. Seven advance strains and four commercial varieties to check their reliability and also to screen out most early varieties for further exploitation in breeding programs as well as at the farmers fields. CRIS-110 produced significantly lowest main stem node number of first sympodial branch (5.9) and was recorded as early variety followed by CRIS-85 and CRIS-107 (6.8) and CRIS-117 (7.1). CRIS-9 was observed as late variety in the test which produced significantly highest main stem node number of first sympodial branch (9.12). As regards the second parameter (days taken to open first flower, CRIS-79, CRIS-85, CIM-443 and CIM-448 opened their first flower (44- DAP) earlier than the other and were observed as early maturing varieties. CRIS-9 opened its first flower after 48 days of planting and was observed late with the similar trend shown while producing first sympodial node number. The two indicators studied are reliable and efficient while predicting the earliness of any variety.
  Rehana Anjum , A. R. Soomro , Saira Bano , M.A. Chang and A. M. Leghari
  Impact of fruiting positions on Seed cotton yield was studied in four commercially grown varieties of Sindh in an experiment conducted during 1996 cotton season. The first fruiting position contributed significantly highest percentage of the total seed cotton yield and number of bolls per plant in all the four cultivars ranging from 22.49 to 43.24 and 22.74 to 42.11 percent, respectively. Similarly, the second fruiting posrdon ranked second in order and contributed 16.87 to 28.68 and 17.81 to 28.15 percent of the total seed cotton yield and number of bolls per plant, respectively in all the cultivars. The results demonstrated that the first four positions on sympodial branches were more important than the remaining fruiting positions as their contribution ranged from 63.66 to 93.86 percent in case of seed cotton yield per plant and 65.35 to 92.46 percent in case of number of bolls per plant. The remaining four positions contributed 5.21 to 16.04 percent seedcotton yield and 6.60 to 16.29 percent number of bolls per plant. The monopodial branch was considered as the ninth position and it is very interesting to note that only in case of Reshmi, the ninth position contributed significantly highest percent of seedcotton yield and number of bolls per plant 20.30 and 18.36 respectively than all other varieties and collectively contribution of 5th to 8th positions. Thus from the cotton management point of view the first four positions were most important.
  M. A. Chang , Rehana Anjum and A. R. Soomro
  An experiment was conducted to evaluate the earliness of four advance strains (CRIS-19, CRIS-52, CRIS-133 and CRIS-134) against one commercial variety CRIS-9 by using Bartlett`s Earliness Index. According to Bartlett "The higher the value of the index the earlier would be the variety". The results of this study demonstrated that CRIS-133 was recorded as earlier variety with 0.745 earliness index followed by CRIS-134 (0.719). CRIS-9 was observed as late variety with earliness index of 0.658 as compared to all other advance strains included in the test.
  M.S. Memon , A. R. Soomro , A. W. Soomro and A. A. Memon
  A field experiment was conducted to assess the effect of four irrigation regimes (l1 =6, I2 =7, 13=8 and 14=9 including one irrigation as soaking dose) on a high yielding strain, CRIS-19 during 1997 and 1 998 crop seasons at CCRI, Sakrand Sindh. On an average, highest seedcotton yield of 1944 kg ha-1 was obtained when the crop received 8 irrigations followed by 9 and 6 irrigations where seedcotton yield of 1887 and 1808 kg ha-1 was obtained respectively. The lowest yield of 1763 kg ha-1 was produced when 6 irrigations were applied.
  A. W. Soomro , A. R. Soomro and G. H. Mallah
  A glasshouse experiment was carried out to evaluate the effect of temporary water logging on the growth and development of cotton and the recovery of nitrogen applied as urea fertilizer, with 3 water treatments i.e. control (W1), moderate flooding (W2), and severe flooding (W3). The studies concluded that flooding greatly reduced the growth characteristics of the cotton plant such as height, number of leaves, fruiting points and plant dry matter. Recovery of nitrogen applied as urea was significantly decreased with the increase in severity of flooding. Nitrogen losses during temporary flooding appears mainly to higher loss of nitrogen by denitrification, although other mechanisms may be significant. The wider implications of the results in terms of field practice with irrigated cotton are discussed.
  A. R. Soomro , A. W. Soomro , A. H. Soomro and Kaneez Soomro A. M. Memon
  Twelve parents in fourteen cross combinations were studied for heterosis in F1 and inbreeding depression in F2 populations for seedcotton yield, number of bolls per plant, ginning out turn %, staple length and uniformity ratio. Seedcotton yield and number of bolls expressed fair amount of heterosis, however, hybrids showing higher magnitudes of heterosis were generally associated with higher amount of inbreeding depression suggesting dominant genes functioning for these traits. Small amount of heterosis, lower magnitude of inbreeding depression for lint percent, staple length and uniformity ratio indicated that additive genes were responsible for the expressions of these traits. Hybrid vigor recorded in F1 in respect of seedcotton yield per plant ranged from 4.5 to 159.0 percent, whereas in bolls per plant, ginning out turn, staple length and uniformity ratio the range was 0 to 150.0, -1.5 to 11.7, 0.7 to 13.0 and -2.0 to 11.1% respectively.
  A. M. Memon , A. R. Soomro , A. W. Soomro and Rehana Anjumand Saira Bano Babar
  A field experiment was conducted to evaluate the different dates of initial irrigation and later irrigation frequencies on seedcotton yield of CRIS-134, an advance heat resistant variety. On an average, data revealed that CRIS-134 significantly responded to first irrigation at 45 days after planting (DAP) and yielded highest (2429 kg ha -1). As regards interval between subsequent irrigations, results revealed that averagely CRIS-134 produced significantly highest yield of 2230 kg ha -1 at every two weeks interval.
  Saira Bano Babar , A. R. Soomro , Rehana Anjum and Muhammad Shahban Kalwar
  A four-parent di-allel cross including CRIS-5A, CRIS-9, CRIS-52 and CRIS-54, cultivars of Gossypium hirsutum was analyzed for heterosis, heterobeltiosis and economic heterosis. The traits studied were the number of sympodia, bolls per plant, boll weight and seedcotton yield. Results revealed that seedcotton yield was dependent on number of bolls per plant (whenever the heterosis for number of bolls per plant went high heterosis for seedcotton yield was also increased). Four hybrids CRIS-52 x CRIS-54, CRIS-5A x CRIS-52, CRIS-52 x CRIS-9 and CRIS-54 x CRIS-52, exhibiting more than 70% of all types of heterosis were singled out.
  G. N. Dayo , A. R. Soomro , G. H. Kalwar and A. A. Channa
  A field experiment was designed to assess the yield performance of three cotton cultivars under five irrigation regimes during 1992 and 1993 crop seasons. On an average, highest seedcotton yield of 2455 kg ha -1 was obtained when the crop received 5 post planting irrigations followed by 6 and 7 post planting irrigations where seedcotton yield of 2256 and 2169 kg ha -1 was obtained respectively. The lowest yield of 1785 kg ha -1 was produced when 8 post planting irrigations were applied. The highest yielding variety was GH-3 that produced 2313 kg ha -1 followed by Shaheen with 2125 kg ha -1 seedcotton yield.
  A. D. Kalhoro , A. R. Soomro , Rehana Anjum , A. W. Soomro and A. M. Memon
  The object of this study was to screen out the best genotype under central Sindh conditions. Four promising advance strains viz., CRIS-2, CRIS-19, CRIS-52 and CRIS-79 were tested against two commercial checks NIAB-78 and CRIS-9. On an average of three years, CRIS-52 ranked first and produced 2671 kg ha -1 seedcotton yield very closely followed by CRIS-19 that yielded 2666 kg ha -1. The increase of top yielding strain CRIS-52 over commercial check NIAB-78 and CRIS-9 was 16.5 and 10.6 % respectively. The lowest yield of 2230 kg ha -1 was produced by NIAB-78. Highest ginning outturn of 34.8 % was given by CRIS-19 and longest staple of 26.4 mm was measured by CRIS-9.
 
 
 
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