Effects of reduced plant height on breeding requirements and ...

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(Table t5t) ind.icated that the first increroent gave a significant response at atl sites, whereas the seeond increment produced a further significant yield increase in onÌy the two tests at CarûÌan. Significant genotypic differences for yield vrere obtained in all" tests except the one at Carman ín L9?5 ( f a¡le 1¿{., ljiA ) , Àt three <strong>of</strong> the se f our locations the tall genotypes were higher yie ld.ing than the semí-dwarfs on a mean basis (Table 158). However, as shown in Table IJA, at no site was the yietd <strong>of</strong> Minn 64-62 signifieantly lower than that <strong>of</strong> the talls¡ in fact, síngle degree <strong>of</strong> freedom comparisons (faul"e 1&) indicated Minn 64-62 ta øe sígnificantly higher yielding than the tall control genotype cv. Bonanza at Portage in I)16, The lower semi-dwarf mean yield resulted from the overall lower yield.s <strong>of</strong> CfOl011 and C7O3o32" ljnlike the report <strong>of</strong> Gardener and Rathjen (19?5), tfre present study showed no F x G j-nteraction at any site (fa¡le 14). However, there was a trend. for the serni-dwarfs, C?03011 anð. C?O3O32, to show a greater respo.rìse and./ or need for at least the first nitrogen increment. rt,t higher N 1evels this response did not continue, possibly d.ue to another 1ímiting factor, in this case moisture. Such lack <strong>of</strong> interaction was previously reported by Syme ftgAZ ) in wheat. The importance <strong>of</strong> moisture in the expression <strong>of</strong> nitrogen response was reported by Stanberry and Lowrey (tSøS), 82
Table 15. NíËrogen ¡'ertil,izer AppJ.ication Study, Mearis for yield (ke,/ha.) Environnents Heíght A. 4312 bc 4340 bc 3737a 4Mab 4723 c 3399 b 315 6 b 2866a 3t26 b 3241 b 4642ab 4849 b 4453ab 4L22a 4368ab 3343ab 3477 b 3195ab 3045a 3440 b 228AL 2138a 2067 a 2236a 1t9t- T T SD SD SD Bonanza c702024 c703011 c703032 Minn64-6 2 B. Height CLass 4326a 4192a 3778 b 3078a 4746 b 4248a 3410 b 3227 a 2209 a 2L95a Talls (T) Semí-dwarfs (SD) Nitrogen Applted (ke . /ha. ) 3363a 4O78ab 4798 b 4300ab 469r b 2339 a 2998ab 317 3 bc 3610 c 3668 c 2691a 4408 b 5048 b 5015 b 5272 b 2392a 3433 b 3464 b 3535 b 3674 b 98sh l7I4 b 2457 c 2935 c 29II c 0 ,00 67 ,26 734.52 20L.78 269,04 lcantl-y different, tter are not signi by the same f Vai-ues Ín a columl
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University of Mani
Page 3 and 4:
ACKNOWI,EDGMENTS It has been a grea
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ÎABI,E OF TONTENTS av írÞâ dô
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Þâ o-â r Days to l'{aturity ....
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vaal ËÞe rro Days to Heading . ".
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SUGGÊSTIONSFORFIIIURSRESEÀRCH ,.,
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11. Nitrogen Fertil-izer Applicatio
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TABT-,8 42, 43, I+4, r+5. 46. 48. 4
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74. 75" ?6, 77, 78,. 79, 80. 81" 82
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xvii i occurred for yield, but the
Page 21 and 22:
I]TERATURE REVIEW Semi-dwarf Growth
Page 23 and 24:
In the United States the barley bre
Page 25 and 26:
Tabl-e 1. Broad Sense Ileritability
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Table 2. Broad Sense Heritability E
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wíth yield. fhis group discussed t
Page 31 and 32:
ship in common wheat. 0n the other
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c onpared 'r . Two other important
Page 35 and 36:
eported a non-significant positive
Page 37 and 38:
majority of studie
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correfation between diastatic power
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extent. Frey et al-. (1951) indicat
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seni-dwarf wheats to nitrogen ferti
Page 45 and 46:
number of spíkes
Page 47 and 48:
Stanberry and Lowrey (L965) reporte
Page 49 and 50: Íright be of grea
Page 51 and 52: from varyíng seeding rates in barl
Page 53 and 54: Reports on the effect of</s
Page 55 and 56: the effect of seed
Page 57 and 58: l,upton et 41. (7974) pointed out t
Page 59 and 60: Table 3. Pedigrees of</stro
Page 61 and 62: (4) 200 Kernel weight * record.ed i
Page 63 and 64: population, using individual line m
Page 65 and 66: Site Sanford 19?6 Clay Cawnan 19?6
Page 67 and 68: Orthogonal single degree of
Page 69 and 70: Experiment lV: _-.t0qlepptite lenet
Page 71 and 72: ferences between genotype s which w
Page 73 and 74: and plant
Page 75 and 76: Table 7. con¡tonêlts of</
Page 77 and 78: was significant" fhe only case in w
Page 79 and 80: (28 to 5B/"), as reported by nost o
Page 81 and 82: Table 8. Continued Range Lor{est Li
Page 83 and 84: the Highest Yielding l,ines within
Page 85 and 86: Phenot:'¡pic Corre-Lations Sinpl-e
Page 87 and 88: Table 10. (Cortínued) Châracteris
Page 89 and 90: did Syme (f972), Fonseca and patter
Page 91 and 92: significant negative correlation wi
Page 93 and 94: elãted negative association betwee
Page 95 and 96: Aglononie ChArae'qeri s! ic s Pl"an
Page 97 and 98: Table 12. N1Ërogen FertLlizer Àpp
Page 99: Teble 14. NltrogeÍ FertLlLzêr ApP
Page 103 and 104: lable 16. Nltrogen Fertlllzer Appll
Page 105 and 106: freedom comparison indicated lqínn
Page 107 and 108: lab1e 19. Nftrogen trertÍlizer Áp
Page 109 and 110: Tâble 20, Nltrogei¡ FeltLltzêr A
Page 111 and 112: TabIe 22, Nltrogen Fertillzer Appli
Page 113 and 114: Table 23. Nitrogen Fertilizer Appl
Page 115 and 116: TabLe 25. Nltrogen Fefttlizef Appll
Page 117 and 118: itable 26. Nitrogen Fertfllzer Appl
Page 119 and 120: latlê 28. Nltrogen ¡'ertlllrer Ap
Page 121 and 122: Sanford â.nd Carnan, 1926, Since N
Page 123 and 124: Tabl-e 31 . Nítrogen Fertilizer Ap
Page 125 and 126: Îable33. Nítrogen Fertllizer Appl
Page 127 and 128: Table 34. Nitrogen Fertilfzer Appli
Page 129 and 130: îab1ê 36. NLtrogeî Fertl,LLzer A
Page 131 and 132: Table 38. Nitrogen Fertllizer Appli
Page 133 and 134: lab1e 39,. NLtrogen Fertllf¿er App
Page 135 and 136: Table 41. Nitïogen Iertillzer Appl
Page 137 and 138: Table 42. Nitrogen Fertllizer Appli
Page 139 and 140: 'IabLe 44. Nítrogen ¡'ertilizer A
Page 141 and 142: Q UAT,TTY Cltq.RÀcTER rsrf ts Q ua
Page 143 and 144: lable 47. Nitrogen ¡'ertilLzer App
Page 145 and 146: Table 49. Nltrogen ferrlllzer AppLl
Page 147 and 148: îhe F x G i.nteraction at portage
Page 149 and 150: fable 52, Nltrogen Fertfllze¡ Appl
Page 151 and 152:
'labLe 54- Seedlng Råte - Row Spac
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Table 55. Seeding Rate - Ror'7 Spac
Page 155 and 156:
Table 57. Seeding Rate - Roúr Spac
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while the tall sho\^/ed virtually n
Page 159 and 160:
Table 59. Seedlûg Rate - Row Spacl
Page 161 and 162:
Table 60. Seedlng Rate - Row Spacin
Page 163 and 164:
Table 61. Seedlng Rate - RotT Spaci
Page 165 and 166:
Table 62, SeedLng Rate - Rorar Spac
Page 167 and 168:
?áble 64. Seedlng Rare - Ror.r Spa
Page 169 and 170:
Table 65. SeedÍng Rate - Row Spaci
Page 171 and 172:
Table 67. Seedfng Rate - Row Spací
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Table 68. AN0VA for Coleoptile Leng
Page 175 and 176:
'Iable 72. Means for Experíment IV
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Table 73. (Continued ) B Variables
Page 179 and 180:
'IabLe 74' Ranks of</strong
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Table 76. cenotype Means for Root D
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fabTe ?6 Cid not indicate this diff
Page 185 and 186:
Table 79. Ranks of
Page 187 and 188:
Tabl"e 81. ANOVA for Number <strong
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the second v¡as not significant (f
Page 191 and 192:
Table 85. Mean Numbers of</
Page 193 and 194:
of two locations f
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have increased the precision <stron
Page 197 and 198:
showed no environmental interaction
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yield testlng experiments. Furtherm
Page 201 and 202:
could in part account for the poor
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signlficant, the correl_ations were
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height and the qua
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trial period. The area in which the
Page 209 and 210:
any specific cross. However, they d
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as strong nor as consl-stent as is
Page 213 and 214:
with several critical agronomic par
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maturity and days in post-anthesis
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significantry rerated to several ot
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icularly when nore optimum growing
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would be useful to know the rerativ
Page 223 and 224:
Kernel Weight Added N had little ef
Page 225 and 226:
much as the tall genotypes. Also th
Page 227 and 228:
îhe effects of N
Page 229 and 230:
with the overall results of
Page 231 and 232:
Phenotypicaì.J_y novel gernplasm,
Page 233 and 234:
drastícaIIy changed phenotype as t
Page 235 and 236:
should not be recomnended for produ
Page 237 and 238:
One of the problem
Page 239 and 240:
The associatíon between root growt
Page 241 and 242:
GENER¡.L DTSCUSS]ON Since desired
Page 243 and 244:
inheríted" observation of<
Page 245 and 246:
indicated by this study suggests th
Page 247 and 248:
individual lines. It is generally c
Page 249 and 250:
sístent suppLy of
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possibílity of ir
Page 253 and 254:
Testing et one site for one year wa
Page 255 and 256:
height genotJpes t
Page 257 and 258:
ïn terms of the o
Page 259 and 260:
Concern has been expressed by dryla
Page 261 and 262:
), +. ( 6, 7, Attempts should be ma
Page 263 and 264:
Beech' D.F" and M.J.T, Norman. 196g
Page 265 and 266:
Day, A.D, and R.K. Thonpson, 1970.
Page 267 and 268:
Guitard, 4,4., J.A. Neûrnan, and p
Page 269 and 270:
Konishi, T. L976. The nature and ch
Page 271 and 272:
Pawlisch, P.E., and H.L. shandp. Lg
Page 273 and 274:
Sisler, I^I.I^I, and p.J. Olsen. 19
Page 275 and 276:
trIoodward, R.trI. 7956. The effect
Page 277 and 278:
Appetrdr*' cenotvprc ìlêans fot j
Page 279 and 280:
^ppendlx conrlnue¿- Genotype Plán
Page 281 and 282:
.9anul¡uor xlpuâd¡¡V ezro tzz ,
Page 283 and 284:
^pIe¡¡¿tx conrtnued. Solu It lß
Page 285:
¿\tÎen¿lr conÈtnu€d, .,¡ÃE
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