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Citrus rootstock identification by tissue coloring testsMakhdum, Nazir Ahmad, 1902- January 1948 (has links)
No description available.
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The effect of rootstock on the performance of the Vitis vinifera cultivars Pinot noir, Chardonnay, Pinot gris and MerlotShaffer, Raymond Glen 02 May 2002 (has links)
This study reports finding of two rootstock experiments planted in
1997. The purpose of the first experiment was to evaluate the
performance of Pinot noir on 19 phylloxera-resistant rootstocks and as an
ungrafted vine. The purpose of the second experiment was to evaluate
the performance of V. Vinifera cultivars Pinot noir, Chardonnay, Pinot gris
and Merlot grafted to nine phylloxera-resistant rootstock, and as ungrafted
vines. Data for both experiments were collected in 2000 and 2001, the
fourth and fifth years of establishment respectively. Vines received
supplemental irrigation and were fertilized with N-P-K during both
seasons. In the first experiment, rootstock affected vegetative growth,
chlorophyll content, yield, cluster weight and berry weight in both years,
gas exchange measurements in 2000, and fruit composition in 2001. Of
the V. riparia x V. rupestris rootstocks, 3309C and Schwarzmann imparted
low to moderate vigor, as reflected by pruning weight. 101-14 Mgt
imparted higher vigor to Pinot noir than 3309C. Based on ripening index
values (soluble solids/titratable acidity, Brix/TA), ripening appeared to be
earlier for vines grafted to 101-14 Mgt and Schwarzmann than for 3309C. The V. berfandieri x V. riparia rootstocks, including 161-49C and 420A,
imparted average to higher than average vigor. Ripening appeared to be
later than average and berries larger than average for vines grafted to
these rootstocks. With the exception of 110R, the V. berlandieri x V.
rupestris rootstocks had higher than average vigor. Ripening times
seemed to be average and berry weights were higher than average for
vines grafted to these rootstocks. Of the remaining-rootstocks 1616C
performed much like the V. berlandieri x V. rupestris rootstocks with an
even higher ripening index. Borner, Riparia Gloire, 44-53 Malegue and
Gravesac all imparted low to moderate vigor. Berry weights tended to be
average to lower than average. Riparia Gloire and Gravesac seemed to
impart earlier ripening, while Borner and 44-53 Malegue did not. In the
second experiment, the V. berlandieri x V. riparia rootstocks imparted
more vigor, a higher yield, a higher berry weight and delayed ripening as
reflected by the ripening index. 101-14 Mgt imparted a higher pruning
weight, lower berry weight and earlier ripening than 3309C. 110R, 44-53
Malegue and Gravesac conferred moderate vigor as reflected by pruning
weight. Riparia Gloire conferred lower vigor. Ripening times imparted by
these rootstocks ranged from early for Riparia Gloire and Gravesac, to
average for 110R and later for 44-53 Malegue. Berry weights were
average for scion grafted to 110R and Gravesac, and low for scion grafted
to Riparia Gloire and 44-53 Malegue. / Graduation date: 2002
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The effect of storage conditions on germination and viability of sour orange and rough lemon rootstock seedsHeaty, Abdul Latif Rahim, 1938- January 1963 (has links)
No description available.
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Factors affecting the germination of citrus rootstock seedRawi, Ismail Matni, 1927- January 1958 (has links)
No description available.
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Screening Passiflora Species For Drought Tolerance, Compatibility With Purple Passion Fruit, Fusarium Wilt Resistance And The Relationship Between Irrigation, Drenching And Media Composition In The Control Of Fusarium WiltGesimba, Robert Morwani 10 December 2008 (has links)
No description available.
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Free amino acids and amides in leaves of nucellar and gametic citrus rootstock seedlingsDo Vale, Diógenes Cabral, 1932- January 1969 (has links)
No description available.
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Rootstock and dormancy studies in apple and pearJacobs, Johannes N. (Johannes Nicolaas) 03 1900 (has links)
Thesis (MScAgric)--University of Stellenbosch, 2001. / ENGLISH ABSTRACT: Delayed foliation is commonly observed in apple and pear producing countries with
warm and/or short winter climates, resulting in less synchronised budburst, of fewer buds
and reduced yield. Applications of rest-breaking agents minimise the symptoms of
delayed foliation. According to chilling models used in fruit producing areas of the
world, the climate of South Africa is not suitable for deciduous fruit production, however
fruit has been successfully produced here for a long time. This study aimed to quantify
the effects of freezing temperatures, different chilling temperatures and the period of
chilling, to obtain a better knowledge of bud dormancy release on apple and pear shoots.
The chilling period was the most important factor influencing the progression of
dormancy. While in some cases the chilling temperature and the freeze treatment effects
were significant, the contribution to differences in the progression of dormancy was
negligible. Our findings indicate that currently used chilling models should emphasise the
time of exposure to low temperatures more than the difference in temperatures between I
to ro-c.
The South African apple and pear industry made good progress in moving towards high
density plantings, but large variation in soil types, non-optimum growing conditions,
replant situations and a lack experience with dwarfing rootstocks limited further
development. However, there is sti II an urgency to obtain higher early yields of good
quality fruit applying the most efficient production practices. We aimed to quantify the
field performance of locally available apple and pear rootstocks, in particular from data
outside of previously reported local trials, as well as early production of newly planted
trials.
Information obtained form the industry indicates that BPI and BP3 are the preferred pear
rootstocks. From production records of 'Packham's Triumph' pears, it appeared that BP3
and OHxF97 produced the best yields compared to the other rootstocks. Production of
'Doyenne du Cornice' was the best on QA and BP3. In newly planted 'Rosemarie',
'Flamingo', and 'Forelle' trials, different rootstocks were evaluated. 'Rosemarie' showed
indications 01 incompatibility with QA and QC5 I, but on BPI and QA with a 'Beurre Hardy' interstock produced good initial yields although BPI induced slightly larger trees.
'Flamingo' on QA and QC51 produced the best yields. 'Forelle' on BPI, BP3, and QA
produced similar yields up to the 4th leaf.
For apples M793 seems to be the preferred rootstock in the South African industry. From
production records of 'Golden Delicious' and 'Granny Smith' apples, it appeared that
M793 and MM 106 produced the best yields when compared to Seedling rootstock. In a
'Cripps' Pink' trial, MMI09, M793 and M25 were more vigorous than M7, MMlll and
MMI06. MMI06 was cumulatively, over four years from planting, the most yield
efficient, although no consistent trend regarding fruit quality was observed between the
rootstocks evaluated. / AFRIKAANSE OPSOMMING: Vertraagde bot word algemeen opgemerk in appel en peer produserende lande met n'
warm enlof kort winter klimaat, wat veroorsaak dat bot van minder knoppe, meer
ongelyk plaasvind en gevolglik lei tot swakker opbrengste. Toediening van rus-breek
middels beperk die simptome van vertraagde bot. Volgens koue modelle wat in vrugte
produserende areas in die wereld gebruik word, is Suid Afrika se klimaat nie geskik vir
die verbouing van sagtevrugte nie alhoewel sagtevrugte al vir n lang tyd met groot sukses
hier verbou word. Hierdie studie is daarop gemik om die effek van vries temperature,
verskillende koue temperature en die periode van koue op die vrystelling van dormansie
op knoppe van appel en peer lote te kwantifiseer.
Die peri ode van koue was die mees belangrikste faktor wat die ontwikkeling van
dormansie beinvloed het. In sommige gevalle was die effek van die koue temperature
betekenisvol, maar die bydrae tot die verskille in die ontwikkeling van dormansie was
weglaatbaar klein. Ons bevindinge dui aan dat die huidige koue modelle wat gebruik
word, meer klem moet le op die periode van blootstelling aan koue as aan die effek van
verski llende temperature tussen 1 en 10°e. Die Suid Afrikaanse appel en peer bedryf het goeie vordering in die beweging na hoe
digtheid aanplantings gemaak, maar groot verskille in grond tipes, sub-optimale groei
toestande, herplant probleme en n' tekort aan ondervinding met dwergende onderstamme
het verdere ontwikkeling beperk. Ten spyte hiervan is daar steeds n' dringendheid om
hcer produksies, van goeie kwaliteit vrugte so vroeg as moontlik te kry deur die
toepassing van die mees effektiewe produksie praktyke. Ons het gepoog om die prestasie
van plaaslik beskikbare appel en peer onderstamme te kwantifiseer, in besonder deur data
wat nog nie van tevore oor verslag gedoen is nie en ook deur te meld van vroee
produksies op nuut aangeplante proewe.
lnformasie uit die bedryf het aangedui dat BP 1 en BP3 die voorkeur peer onderstamme
is. Deur na die produksie geskiedenis van 'Packham's Truimph' pere te kyk kom dit voor
of BP3 en OHxF97 die beste produksies in vergelyking met die ander onderstamme
gelewer het. Die produksie van 'Doyenne du Com ice' was die beste op QA en BP3. In
nuut geplante 'Rosemarie', 'Flamingo', en 'Forelle' pro ev e was verskillende onderstammc
gecvalueer. 'Rosemarie' het tekens van onverenigbaarheid getoon met QA en Q 51, maar
op BP 1 en QA met n 'Beurre Hardy' tussenstam het 'Rosemarie' goeie aanvanklike
opbrengste gel ewer, al was bome op BP 1 effens grater. 'Flamingo' op QA en QCS 1 het
die beste opbrengste gelewer. 'Forelle' op BP 1, BP3, en QA het ongeveer ewe veel tot
die 4dc blad geproduseer.
By appels is M793 die voorkeur onderstam van die Suid-Afrikaanse appel bedryf. M793
en MM 106 gee beter opbrengste as Saailing onderstam wanner die produksie geskiedenis
van 'Golden Delicious' en 'Granny Smith' appels evalueer word. In n' 'Cripps' Pink'
proefwas MMI09, M793 en M2S meer groeikragtig as M7, MMlil en MMI06.
MM I 06 het kumulatief meer geproduseer en was ook meer produsie doeltreffend tot en
met die 4de blad na plant. Daar was egter geen konstante neiging rakende vrug kwaliteit
tussen die verskillende onderstamme wat getoets is nie.
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Potential Rootstocks for "Redblush" Grapefruit in the DesertFallahi, E., Rodney, R., McDonald, H. 12 1900 (has links)
Effects of 12 rootstocks on yield, yield efficiency, bearing potential and quality of 'Redblush' grapefruit were measured and potential rootstocks recommended for the arid climate of southwest Arizona. Trees on 'Palestine' sweet lime and 'Volkamer' lemon produced high cumulative yield but small fruit. Trees on Macrophylla (Alemow) produced higher yields after 5 years of planting and had significantly higher mean yield efficiency than trees on other rootstocks. Thus, Macrophylla rootstock could be a good choice for 'Redblush' at the standard spacing and perhaps at high density spacing in southwest Arizona. Fruit of trees on 'Carrizo' and 'Troyer' citranges were largest. Trees on 'Savage' citrange had lowest yield thinnest peel and highest levels of total soluble solids and soluble solids /acid ratio. Fruit of trees on 'Swingle' citrumelo or C.P.B. 4475 rootstock consistently had higher percentage acid than those on other rootstocks. Considering yield and /or various quality factors, 'Volkamer' lemon, rough lemon , 'Palestine' sweet lime, 'Oklawaha' sour orange and particularly 'Carrizo' citrange are suitable for 'Redblush' grapefruit in the arid Southwest. 'Savage' citrange, 'Ichang' pummelo , 'Cleopatra' mandarin, and 'Swingle' were poor yielding rootstocks for 'Redblush ' grapefruit, and therefore undesirable for planting under the standard spacing of this experiment. 'Savage' and 'Swingle' might be good choices at higher densities because they have yield efficiency, high maximum bearing potential and quality.
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Performance of Various Lemon Types in Southwest ArizonaFallahi, E., Rodney, D. R. 12 1900 (has links)
Long term comparisons of 8 types of lemons (Citrus limon Bunn. F.) on Macrophylla (Alemow) (C. macrophylla) rootstock regarding yield, tree growth, and quality under the arid conditions of the Southwest were studied. 'Foothill Lisbon' showed significantly higher cumulative yield and total acid than 'Monroe Lisbon', 'Prior Lisbon', Eureka strains, and Villa Franca, and had larger fruit than other Lisbon strains. 'Prior Lisbon' produced larger tree canopy than all other strains. Overall, Eureka strains and 'Villa Franca' had lower relative cumulative yield, yield efficiency, canopy volume, soluble solids, total acid and fruit seed content , but higher soluble solids to acid ratio than Lisbon strains. All factors considered 'Foothill Lisbon' and 'Prior Lisbon' have good potential for planting in the arid climate and sandy soil of Southwest, when Macrophylla rootstock is to be used.
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Selections of Blood Oranges for Arizona GrowersMcDonald, H. H., Fallahi, E. 12 1900 (has links)
Interest in growing blood oranges in Arizona has been increasing in recent years, especially for producing fruit for sale in roadside stands. The Arizona Cooperative Citrus Registration Certification Program now has four selections from which to choose: 'Moro', 'Tarocco', 'Sanguinelli', and 'Ruby'. Each one has distinct advantages and disadvantages that should be considered before making a selection.
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