A method for establishing character inter-relations in plant collections, and its possible application to plant improvement programmes

Williams, W. T.; Burt, R.L.; Lance, G. N.

doi:10.1007/bf00023210

Cited by 3 publications

(1 citation statement)

References 5 publications

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“…Yield compensation due to plasticity of yield components is a common feature in grain legumes (Dapaah et al 2000). Partitioning the correlation coefficients of yield components into negative and positive effects further helps to understand the associations involved (Williams et al 1980). The results (Table 7) show that the positive yield response to irrigation of chickpeas was due to the significant positive correlation of TDM, HI and pods/plant with seed yield and was stable during both years.…”

Section: Yield Componentsmentioning

confidence: 98%

The effect of irrigation and sowing date on crop yield and yield components of Kabuli chickpea (Cicer arietinum L.) in a cool-temperate subhumid climate

2003

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SU MMARYThe canopy development, radiation absorption and its utilization for biomass production in response to irrigation at different growth stages of three Kabuli chickpea (Cicer arietinum L.) cultivars was studied on a Wakanui silt loam soil in Canterbury, New Zealand (43x38S, 172x30E). The study also aimed at quantifying the yield potential of the crop under varying irrigation regimes and sowing dates. Green area duration (GAD), intercepted radiation (F i ), radiation use efficiency (U) and total intercepted PAR were significantly (P<0 . 001) increased by irrigation. Total dry matter (TDM) yield was more strongly correlated (R 2 =0 . 69-0 . 83) with GAD than seed yield (R 2 =0 . 60-0 . 69). Accumulation of TDM was highly related to intercepted PAR. Fully irrigated November-sown crops had a final U of 1 . 46 g DM/MJ PAR. The unirrigated crop had a U of only 0 . 92 g DM/MJ PAR. The U tended to decrease with delayed sowing.Averaged over the 2 years, irrigation increased seed yield by 74 -124 % and trends were similar for TDM yield. Seed yield was doubled in November-sown chickpeas (4 . 6 t/ha) and cv. Sanford produced 14 and 16 % more seed than cvs Dwelley and B-90 respectively. Full irrigation from emergence to physiological maturity always gave the highest seed yield (>4 . 7 t/ha), and there was no indication of a critical period of sensitivity to water stress. Based on results collected in the first growing season a simple model relating seed yield to radiation interception, U and HI was made. Results from the second growing season were then used as a simple verification to test the accuracy of predictions. The results suggest that these varieties have the potential to yield more than 4 . 5 t/ha of seed in Canterbury.

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Section: Yield Componentsmentioning

confidence: 98%

The effect of irrigation and sowing date on crop yield and yield components of Kabuli chickpea (Cicer arietinum L.) in a cool-temperate subhumid climate

2003

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A systematic description of cacao clones. II. The discriminative value of qualitative characteristics and the practical compatability of the discriminative value of quantitative and qualitative descriptors

Engels

1983

Euphytica

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TheobromaCUC~D L., cacao clones, discriminative value, qualitative characteristics, taxonomic identifiers SUMMARY A method is presented for calculating the discriminative value of qualitative descriptors, based on the number of taxa pairs that a certain descriptor can separate and on the amount of information that this descriptor shares with other descriptors of the same study. To make this method compatible with thecalculation of the discriminative power of quantitative characteristics, statistical tests are proposed to enable a comparison between both types of characteristics. The data from 32 cacao clones are used to demonstrate the methodology for 15 qualitative characteristics of leaves, flowers and fruits of the cacao tree. The combined use of qualitative and quantitative descriptors in the calculation of their respective discriminatory power is also presented.

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Anwendung numerisch-taxonomischer Methoden bei Kulturpflanzen

Schultze-Motel

Meyer²

1982

Die Kulturpflanze

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A method for establishing character inter-relations in plant collections, and its possible application to plant improvement programmes

Cited by 3 publications

References 5 publications

The effect of irrigation and sowing date on crop yield and yield components of Kabuli chickpea (Cicer arietinum L.) in a cool-temperate subhumid climate

The effect of irrigation and sowing date on crop yield and yield components of Kabuli chickpea (Cicer arietinum L.) in a cool-temperate subhumid climate

A systematic description of cacao clones. II. The discriminative value of qualitative characteristics and the practical compatability of the discriminative value of quantitative and qualitative descriptors

Anwendung numerisch-taxonomischer Methoden bei Kulturpflanzen

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