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

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Table 82, ANOVA for Ernergence Rate, Seedíng Depth Study, Experíment VI. Source <strong>of</strong> Variation df Mean Square Repltcates (R) Depths(cn) (D) 2.54 vs 5.08 2.54 ve 7.62 2,54 vs 10. 16 5.08 vs 7.62 5.08 vs 10.16 7.62 vs !O.16 Error (a) Genotypes (G) DxG Error (b) Total 6 6 18 48 83 * Sl-gnificant aÈ P=0. 05 ** Significant aÈ P=0, 01 LO428.0 261512.3t * 71,0 109456.3't 588779.5** I039s2.6 57 5921 .2*ì< 190512.9* 18120.2 3558.7 5488.6 5327.3 TabLe 83, Mean Number <strong>of</strong> Seedlíngs Emerged and Mean Emergence Rate for êach Seedlng Depth, Experinent VI. Number <strong>of</strong> Energence Seeding Depth(crn) Seedlíngs Emerged Rate lndex 2.54 5. 08 7.62 I0. 16 9.86 b 9.81 b I .52 b 7.9Oa 436.9 c 434.3 bc 334.8 b 200. 1a Values in a group fo11or¡ed by the same letter ãre not significantly dífferenr, p=0.05. L70
the second v¡as not significant (fable Bl). Significant differences existed betvreen genotypes for number <strong>of</strong> seedlings emerged (fable 81). These differences were not sueh as to give rise to a significant cìifference between the <strong>plant</strong> he ight groups (Tab1e B4). No differences existed for ERI betweên genotypes or <strong>plant</strong> he ighi groups, contrary to results reported by A1lan et- al. (L962) and Burleigh et at. (J?6q) from wheat experiments. A significant genotype by seeding depth interaction occurred for number <strong>of</strong> seedlings emerged (rable 81). The neans (Table 85) indieated the interaction occurrêd because genotype s Bonanza, C|O3oLg, and Minn 64_62 showed fewer numbers emerged from the thÍrd than from the second <strong>plant</strong>ing depth while the other genotype s did not. C7O3OL3 showed an inereased nunber <strong>of</strong> seedlings emerged as it was <strong>plant</strong>ed progressively deeper, to the third depth (laUfe 85¡. This probably resulted frorn inadequate watering or viability problerns rather than a genuine depth effecto Contrary to reported studies with wheat (ÀLlan et ê.L., 1962), in the present study energence rate was not significantly correlated with eoleoptile length (gab1e Z3B). 177
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University of Mani
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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
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I]TERATURE REVIEW Semi-dwarf Growth
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In the United States the barley bre
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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
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ship in common wheat. 0n the other
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c onpared 'r . Two other important
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eported a non-significant positive
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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
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number of spíkes
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Stanberry and Lowrey (L965) reporte
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Íright be of grea
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from varyíng seeding rates in barl
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Reports on the effect of</s
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the effect of seed
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l,upton et 41. (7974) pointed out t
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Table 3. Pedigrees of</stro
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(4) 200 Kernel weight * record.ed i
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population, using individual line m
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Site Sanford 19?6 Clay Cawnan 19?6
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Orthogonal single degree of
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Experiment lV: _-.t0qlepptite lenet
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ferences between genotype s which w
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and plant
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Table 7. con¡tonêlts of</
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was significant" fhe only case in w
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(28 to 5B/"), as reported by nost o
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Table 8. Continued Range Lor{est Li
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the Highest Yielding l,ines within
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Phenot:'¡pic Corre-Lations Sinpl-e
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Table 10. (Cortínued) Châracteris
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did Syme (f972), Fonseca and patter
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significant negative correlation wi
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elãted negative association betwee
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Aglononie ChArae'qeri s! ic s Pl"an
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Table 12. N1Ërogen FertLlizer Àpp
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Teble 14. NltrogeÍ FertLlLzêr ApP
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Table 15. NíËrogen ¡'ertil,izer
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lable 16. Nltrogen Fertlllzer Appll
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freedom comparison indicated lqínn
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lab1e 19. Nftrogen trertÍlizer Áp
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Tâble 20, Nltrogei¡ FeltLltzêr A
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TabIe 22, Nltrogen Fertillzer Appli
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Table 23. Nitrogen Fertilizer Appl
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TabLe 25. Nltrogen Fefttlizef Appll
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itable 26. Nitrogen Fertfllzer Appl
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latlê 28. Nltrogen ¡'ertlllrer Ap
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Sanford â.nd Carnan, 1926, Since N
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Tabl-e 31 . Nítrogen Fertilizer Ap
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Îable33. Nítrogen Fertllizer Appl
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Table 34. Nitrogen Fertilfzer Appli
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îab1ê 36. NLtrogeî Fertl,LLzer A
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Table 38. Nitrogen Fertllizer Appli
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lab1e 39,. NLtrogen Fertllf¿er App
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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
Page 153 and 154: Table 55. Seeding Rate - Ror'7 Spac
Page 155 and 156: Table 57. Seeding Rate - Roúr Spac
Page 157 and 158: 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
Page 173 and 174: Table 68. AN0VA for Coleoptile Leng
Page 175 and 176: 'Iable 72. Means for Experíment IV
Page 177 and 178: Table 73. (Continued ) B Variables
Page 179 and 180: 'IabLe 74' Ranks of</strong
Page 181 and 182: Table 76. cenotype Means for Root D
Page 183 and 184: fabTe ?6 Cid not indicate this diff
Page 185 and 186: Table 79. Ranks of
Page 187: Tabl"e 81. ANOVA for Number <strong
Page 191 and 192: Table 85. Mean Numbers of</
Page 193 and 194: of two locations f
Page 195 and 196: have increased the precision <stron
Page 197 and 198: showed no environmental interaction
Page 199 and 200: yield testlng experiments. Furtherm
Page 201 and 202: could in part account for the poor
Page 203 and 204: signlficant, the correl_ations were
Page 205 and 206: height and the qua
Page 207 and 208: trial period. The area in which the
Page 209 and 210: any specific cross. However, they d
Page 211 and 212: as strong nor as consl-stent as is
Page 213 and 214: with several critical agronomic par
Page 215 and 216: maturity and days in post-anthesis
Page 217 and 218: significantry rerated to several ot
Page 219 and 220: icularly when nore optimum growing
Page 221 and 222: 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
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The associatíon between root growt
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GENER¡.L DTSCUSS]ON Since desired
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inheríted" observation of<
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indicated by this study suggests th
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individual lines. It is generally c
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sístent suppLy of
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possibílity of ir
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Testing et one site for one year wa
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height genotJpes t
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ïn terms of the o
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Concern has been expressed by dryla
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), +. ( 6, 7, Attempts should be ma
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Beech' D.F" and M.J.T, Norman. 196g
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Day, A.D, and R.K. Thonpson, 1970.
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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
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Sisler, I^I.I^I, and p.J. Olsen. 19
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trIoodward, R.trI. 7956. The effect
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Appetrdr*' cenotvprc ìlêans fot j
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^ppendlx conrlnue¿- Genotype Plán
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.9anul¡uor xlpuâd¡¡V ezro tzz ,
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^pIe¡¡¿tx conrtnued. Solu It lß
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¿\tÎen¿lr conÈtnu€d, .,¡ÃE
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